diff --git a/api/current.txt b/api/current.txt
index 90e44e775dba5..fc0ba7f8e4be6 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -2112,22 +2112,6 @@ package android {
     field public static final int Theme_Light_Panel = 16973914; // 0x103005a
     field public static final int Theme_Light_WallpaperSettings = 16973922; // 0x1030062
     field public static final int Theme_Material = 16974372; // 0x1030224
-    field public static final int Theme_Material_DayNight = 16974548; // 0x10302d4
-    field public static final int Theme_Material_DayNight_DarkActionBar = 16974549; // 0x10302d5
-    field public static final int Theme_Material_DayNight_Dialog = 16974550; // 0x10302d6
-    field public static final int Theme_Material_DayNight_DialogWhenLarge = 16974556; // 0x10302dc
-    field public static final int Theme_Material_DayNight_DialogWhenLarge_DarkActionBar = 16974568; // 0x10302e8
-    field public static final int Theme_Material_DayNight_DialogWhenLarge_NoActionBar = 16974557; // 0x10302dd
-    field public static final int Theme_Material_DayNight_Dialog_Alert = 16974551; // 0x10302d7
-    field public static final int Theme_Material_DayNight_Dialog_MinWidth = 16974552; // 0x10302d8
-    field public static final int Theme_Material_DayNight_Dialog_NoActionBar = 16974553; // 0x10302d9
-    field public static final int Theme_Material_DayNight_Dialog_NoActionBar_MinWidth = 16974554; // 0x10302da
-    field public static final int Theme_Material_DayNight_Dialog_Presentation = 16974555; // 0x10302db
-    field public static final int Theme_Material_DayNight_NoActionBar = 16974558; // 0x10302de
-    field public static final int Theme_Material_DayNight_NoActionBar_Fullscreen = 16974559; // 0x10302df
-    field public static final int Theme_Material_DayNight_NoActionBar_Overscan = 16974560; // 0x10302e0
-    field public static final int Theme_Material_DayNight_NoActionBar_TranslucentDecor = 16974561; // 0x10302e1
-    field public static final int Theme_Material_DayNight_Panel = 16974562; // 0x10302e2
     field public static final int Theme_Material_Dialog = 16974373; // 0x1030225
     field public static final int Theme_Material_DialogWhenLarge = 16974379; // 0x103022b
     field public static final int Theme_Material_DialogWhenLarge_NoActionBar = 16974380; // 0x103022c
@@ -2141,7 +2125,6 @@ package android {
     field public static final int Theme_Material_Light_DarkActionBar = 16974392; // 0x1030238
     field public static final int Theme_Material_Light_Dialog = 16974393; // 0x1030239
     field public static final int Theme_Material_Light_DialogWhenLarge = 16974399; // 0x103023f
-    field public static final int Theme_Material_Light_DialogWhenLarge_DarkActionBar = 16974567; // 0x10302e7
     field public static final int Theme_Material_Light_DialogWhenLarge_NoActionBar = 16974400; // 0x1030240
     field public static final int Theme_Material_Light_Dialog_Alert = 16974394; // 0x103023a
     field public static final int Theme_Material_Light_Dialog_MinWidth = 16974395; // 0x103023b
@@ -2597,6 +2580,21 @@ package android {
     field public static final int Widget_Toolbar = 16974311; // 0x10301e7
     field public static final int Widget_Toolbar_Button_Navigation = 16974312; // 0x10301e8
     field public static final int Widget_WebView = 16973875; // 0x1030033
+    field public static final int __reserved10 = 16974550; // 0x10302d6
+    field public static final int __reserved11 = 16974551; // 0x10302d7
+    field public static final int __reserved12 = 16974552; // 0x10302d8
+    field public static final int __reserved13 = 16974553; // 0x10302d9
+    field public static final int __reserved14 = 16974554; // 0x10302da
+    field public static final int __reserved15 = 16974555; // 0x10302db
+    field public static final int __reserved16 = 16974556; // 0x10302dc
+    field public static final int __reserved17 = 16974557; // 0x10302dd
+    field public static final int __reserved18 = 16974558; // 0x10302de
+    field public static final int __reserved19 = 16974559; // 0x10302df
+    field public static final int __reserved20 = 16974560; // 0x10302e0
+    field public static final int __reserved21 = 16974561; // 0x10302e1
+    field public static final int __reserved22 = 16974562; // 0x10302e2
+    field public static final int __reserved8 = 16974548; // 0x10302d4
+    field public static final int __reserved9 = 16974549; // 0x10302d5
   }
 
   public static final class R.transition {
diff --git a/api/system-current.txt b/api/system-current.txt
index 8a99eaf49aac0..b29fb4b32d7ba 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -2194,22 +2194,6 @@ package android {
     field public static final int Theme_Light_Panel = 16973914; // 0x103005a
     field public static final int Theme_Light_WallpaperSettings = 16973922; // 0x1030062
     field public static final int Theme_Material = 16974372; // 0x1030224
-    field public static final int Theme_Material_DayNight = 16974548; // 0x10302d4
-    field public static final int Theme_Material_DayNight_DarkActionBar = 16974549; // 0x10302d5
-    field public static final int Theme_Material_DayNight_Dialog = 16974550; // 0x10302d6
-    field public static final int Theme_Material_DayNight_DialogWhenLarge = 16974556; // 0x10302dc
-    field public static final int Theme_Material_DayNight_DialogWhenLarge_DarkActionBar = 16974568; // 0x10302e8
-    field public static final int Theme_Material_DayNight_DialogWhenLarge_NoActionBar = 16974557; // 0x10302dd
-    field public static final int Theme_Material_DayNight_Dialog_Alert = 16974551; // 0x10302d7
-    field public static final int Theme_Material_DayNight_Dialog_MinWidth = 16974552; // 0x10302d8
-    field public static final int Theme_Material_DayNight_Dialog_NoActionBar = 16974553; // 0x10302d9
-    field public static final int Theme_Material_DayNight_Dialog_NoActionBar_MinWidth = 16974554; // 0x10302da
-    field public static final int Theme_Material_DayNight_Dialog_Presentation = 16974555; // 0x10302db
-    field public static final int Theme_Material_DayNight_NoActionBar = 16974558; // 0x10302de
-    field public static final int Theme_Material_DayNight_NoActionBar_Fullscreen = 16974559; // 0x10302df
-    field public static final int Theme_Material_DayNight_NoActionBar_Overscan = 16974560; // 0x10302e0
-    field public static final int Theme_Material_DayNight_NoActionBar_TranslucentDecor = 16974561; // 0x10302e1
-    field public static final int Theme_Material_DayNight_Panel = 16974562; // 0x10302e2
     field public static final int Theme_Material_Dialog = 16974373; // 0x1030225
     field public static final int Theme_Material_DialogWhenLarge = 16974379; // 0x103022b
     field public static final int Theme_Material_DialogWhenLarge_NoActionBar = 16974380; // 0x103022c
@@ -2223,7 +2207,6 @@ package android {
     field public static final int Theme_Material_Light_DarkActionBar = 16974392; // 0x1030238
     field public static final int Theme_Material_Light_Dialog = 16974393; // 0x1030239
     field public static final int Theme_Material_Light_DialogWhenLarge = 16974399; // 0x103023f
-    field public static final int Theme_Material_Light_DialogWhenLarge_DarkActionBar = 16974567; // 0x10302e7
     field public static final int Theme_Material_Light_DialogWhenLarge_NoActionBar = 16974400; // 0x1030240
     field public static final int Theme_Material_Light_Dialog_Alert = 16974394; // 0x103023a
     field public static final int Theme_Material_Light_Dialog_MinWidth = 16974395; // 0x103023b
@@ -2679,6 +2662,21 @@ package android {
     field public static final int Widget_Toolbar = 16974311; // 0x10301e7
     field public static final int Widget_Toolbar_Button_Navigation = 16974312; // 0x10301e8
     field public static final int Widget_WebView = 16973875; // 0x1030033
+    field public static final int __reserved10 = 16974550; // 0x10302d6
+    field public static final int __reserved11 = 16974551; // 0x10302d7
+    field public static final int __reserved12 = 16974552; // 0x10302d8
+    field public static final int __reserved13 = 16974553; // 0x10302d9
+    field public static final int __reserved14 = 16974554; // 0x10302da
+    field public static final int __reserved15 = 16974555; // 0x10302db
+    field public static final int __reserved16 = 16974556; // 0x10302dc
+    field public static final int __reserved17 = 16974557; // 0x10302dd
+    field public static final int __reserved18 = 16974558; // 0x10302de
+    field public static final int __reserved19 = 16974559; // 0x10302df
+    field public static final int __reserved20 = 16974560; // 0x10302e0
+    field public static final int __reserved21 = 16974561; // 0x10302e1
+    field public static final int __reserved22 = 16974562; // 0x10302e2
+    field public static final int __reserved8 = 16974548; // 0x10302d4
+    field public static final int __reserved9 = 16974549; // 0x10302d5
   }
 
   public static final class R.transition {
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index f197597fa68a2..4871d90473733 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -2433,8 +2433,7 @@
                  android:backupAgent="com.android.server.backup.SystemBackupAgent"
                  android:killAfterRestore="false"
                  android:icon="@drawable/ic_launcher_android"
-                 android:supportsRtl="true"
-                 android:theme="@style/Theme.Material.DayNight.DarkActionBar">
+                 android:supportsRtl="true">
         <activity android:name="com.android.internal.app.ChooserActivity"
                 android:theme="@style/Theme.DeviceDefault.Resolver"
                 android:finishOnCloseSystemDialogs="true"
@@ -2467,7 +2466,7 @@
                 android:label="@string/managed_profile_label">
         </activity-alias>
         <activity android:name="com.android.internal.app.HeavyWeightSwitcherActivity"
-                android:theme="@style/Theme.Material.DayNight.Dialog"
+                android:theme="@style/Theme.Material.Light.Dialog"
                 android:label="@string/heavy_weight_switcher_title"
                 android:finishOnCloseSystemDialogs="true"
                 android:excludeFromRecents="true"
@@ -2500,7 +2499,7 @@
         <activity android:name="android.accounts.ChooseAccountActivity"
                 android:excludeFromRecents="true"
                 android:exported="true"
-                android:theme="@style/Theme.Material.DayNight.Dialog"
+                android:theme="@style/Theme.Material.Light.Dialog"
                 android:label="@string/choose_account_label"
                 android:process=":ui">
         </activity>
@@ -2508,14 +2507,14 @@
         <activity android:name="android.accounts.ChooseTypeAndAccountActivity"
                 android:excludeFromRecents="true"
                 android:exported="true"
-                android:theme="@style/Theme.Material.DayNight.Dialog"
+                android:theme="@style/Theme.Material.Light.Dialog"
                 android:label="@string/choose_account_label"
                 android:process=":ui">
         </activity>
 
         <activity android:name="android.accounts.ChooseAccountTypeActivity"
                 android:excludeFromRecents="true"
-                android:theme="@style/Theme.Material.DayNight.Dialog"
+                android:theme="@style/Theme.Material.Light.Dialog"
                 android:label="@string/choose_account_label"
                 android:process=":ui">
         </activity>
@@ -2523,19 +2522,19 @@
         <activity android:name="android.accounts.CantAddAccountActivity"
                 android:excludeFromRecents="true"
                 android:exported="true"
-                android:theme="@style/Theme.Material.DayNight.Dialog.NoActionBar"
+                android:theme="@style/Theme.Material.Light.Dialog.NoActionBar"
                 android:process=":ui">
         </activity>
 
         <activity android:name="android.accounts.GrantCredentialsPermissionActivity"
                 android:excludeFromRecents="true"
                 android:exported="true"
-                android:theme="@style/Theme.Material.DayNight.DialogWhenLarge"
+                android:theme="@style/Theme.Material.Light.DialogWhenLarge"
                 android:process=":ui">
         </activity>
 
         <activity android:name="android.content.SyncActivityTooManyDeletes"
-               android:theme="@style/Theme.Material.DayNight.Dialog"
+               android:theme="@style/Theme.Material.Light.Dialog"
                android:label="@string/sync_too_many_deletes"
                android:process=":ui">
         </activity>
@@ -2555,7 +2554,7 @@
         </activity>
 
         <activity android:name="com.android.internal.app.NetInitiatedActivity"
-                android:theme="@style/Theme.Material.DayNight.Dialog.Alert"
+                android:theme="@style/Theme.Material.Light.Dialog.Alert"
                 android:excludeFromRecents="true"
                 android:process=":ui">
         </activity>
diff --git a/core/res/res/values-night/themes_material_daynight.xml b/core/res/res/values-night/themes_material_daynight.xml
deleted file mode 100644
index b34458295ba31..0000000000000
--- a/core/res/res/values-night/themes_material_daynight.xml
+++ /dev/null
@@ -1,117 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2015 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<!--
-===============================================================
-                        PLEASE READ
-===============================================================
-
-The Material themes must not be modified in order to pass CTS.
-Many related themes and styles depend on other values defined in this file.
-If you would like to provide custom themes and styles for your device,
-please see themes_device_defaults.xml.
-
-===============================================================
-                        PLEASE READ
-===============================================================
- -->
-<resources>
-
-    <!-- Material theme (day/night version) for activities. -->
-    <style name="Theme.Material.DayNight" parent="Theme.Material" />
-
-    <!-- Variant of Material.DayNight that has a solid (opaque) action bar
-         with an inverse color profile. The dark action bar sharply stands out against
-         the light content (when applicable).  -->
-    <style name="Theme.Material.DayNight.DarkActionBar" parent="Theme.Material" />
-
-    <!-- Variant of Material.DayNight with no action bar.  -->
-    <style name="Theme.Material.DayNight.NoActionBar" parent="Theme.Material.NoActionBar" />
-
-    <!-- Variant of Material.DayNight that has no title bar and fills
-         the entire screen. This theme
-         sets {@link android.R.attr#windowFullscreen} to true.  -->
-    <style name="Theme.Material.DayNight.NoActionBar.Fullscreen" parent="Theme.Material.NoActionBar.Fullscreen" />
-
-    <!-- Variant of Material.DayNight that has no title bar and fills
-         the entire screen and extends into the display overscan region. This theme
-         sets {@link android.R.attr#windowFullscreen} and {@link android.R.attr#windowOverscan}
-         to true. -->
-    <style name="Theme.Material.DayNight.NoActionBar.Overscan" parent="Theme.Material.NoActionBar.Overscan" />
-
-    <!-- Variant of Material.DayNight that has no title bar and translucent
-         system decor. This theme sets {@link android.R.attr#windowTranslucentStatus} and
-         {@link android.R.attr#windowTranslucentNavigation} to true. -->
-    <style name="Theme.Material.DayNight.NoActionBar.TranslucentDecor" parent="Theme.Material.NoActionBar.TranslucentDecor" />
-
-    <!-- Default Material.DayNight theme for panel windows. This removes all extraneous
-         window decorations, so you basically have an empty rectangle in which
-         to place your content. It makes the window floating, with a transparent
-         background, and turns off dimming behind the window. -->
-    <style name="Theme.Material.DayNight.Panel" parent="Theme.Material.Panel" />
-
-    <!-- Material theme (day/night version) for dialog windows and activities,
-         which is used by the {@link android.app.Dialog} class. This changes
-         the window to be floating (not fill the entire screen), and puts a
-         frame around its contents. You can set this theme on an activity if
-         you would like to make an activity that looks like a Dialog. -->
-    <style name="Theme.Material.DayNight.Dialog" parent="Theme.Material.DayNight.BaseDialog" />
-    <style name="Theme.Material.DayNight.BaseDialog" parent="Theme.Material.BaseDialog" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog that has a nice minimum width for
-         a regular dialog. -->
-    <style name="Theme.Material.DayNight.Dialog.MinWidth" parent="Theme.Material.Dialog.MinWidth" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog that does not include a title bar. -->
-    <style name="Theme.Material.DayNight.Dialog.NoActionBar" parent="Theme.Material.Dialog.NoActionBar" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog.NoActionBar that has a nice minimum width for
-         a regular dialog. -->
-    <style name="Theme.Material.DayNight.Dialog.NoActionBar.MinWidth" parent="Theme.Material.Dialog.NoActionBar.MinWidth" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog that has a fixed size. -->
-    <style name="Theme.Material.DayNight.Dialog.FixedSize" parent="Theme.Material.Dialog.FixedSize" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog.NoActionBar that has a fixed size. -->
-    <style name="Theme.Material.DayNight.Dialog.NoActionBar.FixedSize" parent="Theme.Material.Dialog.NoActionBar.FixedSize" />
-
-    <!-- Theme for a window that will be displayed either full-screen on
-         smaller screens (small, normal) or as a dialog on larger screens
-         (large, xlarge). -->
-    <style name="Theme.Material.DayNight.DialogWhenLarge" parent="Theme.Material.DialogWhenLarge" />
-
-    <!-- Theme for a window with a dark action bar that will be displayed
-         either full-screen on smaller screens (small, normal) or as a dialog
-         on larger screens (large, xlarge). -->
-    <style name="Theme.Material.DayNight.DialogWhenLarge.DarkActionBar" parent="Theme.Material.DialogWhenLarge" />
-
-    <!-- Theme for a window without an action bar that will be displayed either full-screen
-         on smaller screens (small, normal) or as a dialog on larger screens
-         (large, xlarge). -->
-    <style name="Theme.Material.DayNight.DialogWhenLarge.NoActionBar" parent="Theme.Material.DialogWhenLarge.NoActionBar" />
-
-    <!-- Theme for a presentation window on a secondary display. -->
-    <style name="Theme.Material.DayNight.Dialog.Presentation" parent="Theme.Material.Dialog.Presentation" />
-
-    <!-- Material user theme for alert dialog windows, which is used by the
-         {@link android.app.AlertDialog} class. -->
-    <style name="Theme.Material.DayNight.Dialog.Alert" parent="Theme.Material.DayNight.Dialog.BaseAlert" />
-    <style name="Theme.Material.DayNight.Dialog.BaseAlert" parent="Theme.Material.Dialog.BaseAlert" />
-
-    <style name="Theme.Material.DayNight.SearchBar" parent="Theme.Material.SearchBar" />
-    <style name="Theme.Material.DayNight.CompactMenu" parent="Theme.Material.CompactMenu" />
-
-</resources>
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 65fa36b854b8e..ab798bbb24b6d 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -2631,27 +2631,41 @@
   <public type="attr" name="fullBackupContent" />
 
   <public type="style" name="Widget.Material.Button.Colored" />
-  <public type="style" name="Theme.Material.DayNight" />
-  <public type="style" name="Theme.Material.DayNight.DarkActionBar" />
-  <public type="style" name="Theme.Material.DayNight.Dialog" />
-  <public type="style" name="Theme.Material.DayNight.Dialog.Alert" />
-  <public type="style" name="Theme.Material.DayNight.Dialog.MinWidth" />
-  <public type="style" name="Theme.Material.DayNight.Dialog.NoActionBar" />
-  <public type="style" name="Theme.Material.DayNight.Dialog.NoActionBar.MinWidth" />
-  <public type="style" name="Theme.Material.DayNight.Dialog.Presentation" />
-  <public type="style" name="Theme.Material.DayNight.DialogWhenLarge" />
-  <public type="style" name="Theme.Material.DayNight.DialogWhenLarge.NoActionBar" />
-  <public type="style" name="Theme.Material.DayNight.NoActionBar" />
-  <public type="style" name="Theme.Material.DayNight.NoActionBar.Fullscreen" />
-  <public type="style" name="Theme.Material.DayNight.NoActionBar.Overscan" />
-  <public type="style" name="Theme.Material.DayNight.NoActionBar.TranslucentDecor" />
-  <public type="style" name="Theme.Material.DayNight.Panel" />
+
+  <style name="__reserved8" />
+  <public type="style" name="__reserved8" />
+  <style name="__reserved9" />
+  <public type="style" name="__reserved9" />
+  <style name="__reserved10" />
+  <public type="style" name="__reserved10" />
+  <style name="__reserved11" />
+  <public type="style" name="__reserved11" />
+  <style name="__reserved12" />
+  <public type="style" name="__reserved12" />
+  <style name="__reserved13" />
+  <public type="style" name="__reserved13" />
+  <style name="__reserved14" />
+  <public type="style" name="__reserved14" />
+  <style name="__reserved15" />
+  <public type="style" name="__reserved15" />
+  <style name="__reserved16" />
+  <public type="style" name="__reserved16" />
+  <style name="__reserved17" />
+  <public type="style" name="__reserved17" />
+  <style name="__reserved18" />
+  <public type="style" name="__reserved18" />
+  <style name="__reserved19" />
+  <public type="style" name="__reserved19" />
+  <style name="__reserved20" />
+  <public type="style" name="__reserved20" />
+  <style name="__reserved21" />
+  <public type="style" name="__reserved21" />
+  <style name="__reserved22" />
+  <public type="style" name="__reserved22" />
   <public type="style" name="Theme.Material.Light.LightStatusBar" />
   <public type="style" name="ThemeOverlay.Material.Dialog" />
   <public type="style" name="TextAppearance.Material.Widget.Button.Inverse" />
   <public type="style" name="ThemeOverlay.Material.Dialog.Alert" />
-  <public type="style" name="Theme.Material.Light.DialogWhenLarge.DarkActionBar" />
-  <public type="style" name="Theme.Material.DayNight.DialogWhenLarge.DarkActionBar" />
 
   <public type="id" name="pasteAsPlainText" />
   <public type="id" name="undo" />
diff --git a/core/res/res/values/themes_material.xml b/core/res/res/values/themes_material.xml
index 295b453fb0b71..9d3a7ef3e9fd6 100644
--- a/core/res/res/values/themes_material.xml
+++ b/core/res/res/values/themes_material.xml
@@ -1281,7 +1281,7 @@ please see themes_device_defaults.xml.
     </style>
 
     <!-- Default theme for Settings and activities launched from Settings. -->
-    <style name="Theme.Material.Settings" parent="Theme.Material.DayNight.DarkActionBar">
+    <style name="Theme.Material.Settings" parent="Theme.Material.Light.DarkActionBar">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
 
@@ -1291,7 +1291,7 @@ please see themes_device_defaults.xml.
     </style>
 
     <!-- Default theme for Settings and activities launched from Settings. -->
-    <style name="Theme.Material.Settings.NoActionBar" parent="Theme.Material.DayNight.NoActionBar">
+    <style name="Theme.Material.Settings.NoActionBar" parent="Theme.Material.Light.NoActionBar">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
 
@@ -1299,42 +1299,40 @@ please see themes_device_defaults.xml.
         <item name="searchDialogTheme">@style/Theme.Material.Settings.SearchBar</item>
         <item name="panelMenuListTheme">@style/Theme.Material.Settings.CompactMenu</item>
     </style>
-
-    <style name="Theme.Material.Settings.BaseDialog" parent="Theme.Material.DayNight.BaseDialog">
+    <style name="Theme.Material.Settings.BaseDialog" parent="Theme.Material.Light.BaseDialog">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
     </style>
 
     <style name="Theme.Material.Settings.Dialog" parent="Theme.Material.Settings.BaseDialog" />
 
-    <style name="Theme.Material.Settings.Dialog.BaseAlert" parent="Theme.Material.DayNight.Dialog.BaseAlert">
+    <style name="Theme.Material.Settings.Dialog.BaseAlert" parent="Theme.Material.Light.Dialog.BaseAlert">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
     </style>
 
     <style name="Theme.Material.Settings.Dialog.Alert" parent="Theme.Material.Settings.Dialog.BaseAlert" />
 
-    <style name="Theme.Material.Settings.DialogWhenLarge" parent="Theme.Material.DayNight.DialogWhenLarge.DarkActionBar">
+    <style name="Theme.Material.Settings.DialogWhenLarge" parent="Theme.Material.Light.DialogWhenLarge.DarkActionBar">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
     </style>
 
-    <style name="Theme.Material.Settings.DialogWhenLarge.NoActionBar" parent="Theme.Material.DayNight.DialogWhenLarge.NoActionBar">
+    <style name="Theme.Material.Settings.DialogWhenLarge.NoActionBar" parent="Theme.Material.Light.DialogWhenLarge.NoActionBar">
+        <item name="colorPrimary">@color/material_blue_grey_900</item>
+        <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
+    </style>
+    <style name="Theme.Material.Settings.Dialog.Presentation" parent="Theme.Material.Light.Dialog.Presentation">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
     </style>
 
-    <style name="Theme.Material.Settings.Dialog.Presentation" parent="Theme.Material.DayNight.Dialog.Presentation">
+    <style name="Theme.Material.Settings.SearchBar" parent="Theme.Material.Light.SearchBar">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
     </style>
 
-    <style name="Theme.Material.Settings.SearchBar" parent="Theme.Material.DayNight.SearchBar">
-        <item name="colorPrimary">@color/material_blue_grey_900</item>
-        <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
-    </style>
-
-    <style name="Theme.Material.Settings.CompactMenu" parent="Theme.Material.DayNight.CompactMenu">
+    <style name="Theme.Material.Settings.CompactMenu" parent="Theme.Material.Light.CompactMenu">
         <item name="colorPrimary">@color/material_blue_grey_900</item>
         <item name="colorPrimaryDark">@color/material_blue_grey_950</item>
     </style>
diff --git a/core/res/res/values/themes_material_daynight.xml b/core/res/res/values/themes_material_daynight.xml
deleted file mode 100644
index 4ecca6be0b705..0000000000000
--- a/core/res/res/values/themes_material_daynight.xml
+++ /dev/null
@@ -1,117 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2015 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<!--
-===============================================================
-                        PLEASE READ
-===============================================================
-
-The Material themes must not be modified in order to pass CTS.
-Many related themes and styles depend on other values defined in this file.
-If you would like to provide custom themes and styles for your device,
-please see themes_device_defaults.xml.
-
-===============================================================
-                        PLEASE READ
-===============================================================
- -->
-<resources>
-
-    <!-- Material theme (day/night vesion) for activities. -->
-    <style name="Theme.Material.DayNight" parent="Theme.Material.Light" />
-
-    <!-- Variant of Material.DayNight that has a solid (opaque) action bar
-         with an inverse color profile. The dark action bar sharply stands out against
-         the light content (when applicable).  -->
-    <style name="Theme.Material.DayNight.DarkActionBar" parent="Theme.Material.Light.DarkActionBar" />
-
-    <!-- Variant of Material.DayNight with no action bar.  -->
-    <style name="Theme.Material.DayNight.NoActionBar" parent="Theme.Material.Light.NoActionBar" />
-
-    <!-- Variant of Material.DayNight that has no title bar and fills
-         the entire screen. This theme
-         sets {@link android.R.attr#windowFullscreen} to true.  -->
-    <style name="Theme.Material.DayNight.NoActionBar.Fullscreen" parent="Theme.Material.Light.NoActionBar.Fullscreen" />
-
-    <!-- Variant of Material.DayNight that has no title bar and fills
-         the entire screen and extends into the display overscan region. This theme
-         sets {@link android.R.attr#windowFullscreen} and {@link android.R.attr#windowOverscan}
-         to true. -->
-    <style name="Theme.Material.DayNight.NoActionBar.Overscan" parent="Theme.Material.Light.NoActionBar.Overscan" />
-
-    <!-- Variant of Material.DayNight that has no title bar and translucent
-         system decor. This theme sets {@link android.R.attr#windowTranslucentStatus} and
-         {@link android.R.attr#windowTranslucentNavigation} to true. -->
-    <style name="Theme.Material.DayNight.NoActionBar.TranslucentDecor" parent="Theme.Material.Light.NoActionBar.TranslucentDecor" />
-
-    <!-- Default Material.DayNight theme for panel windows. This removes all extraneous
-         window decorations, so you basically have an empty rectangle in which
-         to place your content. It makes the window floating, with a transparent
-         background, and turns off dimming behind the window. -->
-    <style name="Theme.Material.DayNight.Panel" parent="Theme.Material.Light.Panel" />
-
-    <!-- Material theme (day/night vesion) for dialog windows and activities,
-         which is used by the {@link android.app.Dialog} class. This changes
-         the window to be floating (not fill the entire screen), and puts a
-         frame around its contents. You can set this theme on an activity if
-         you would like to make an activity that looks like a Dialog. -->
-    <style name="Theme.Material.DayNight.Dialog" parent="Theme.Material.DayNight.BaseDialog" />
-    <style name="Theme.Material.DayNight.BaseDialog" parent="Theme.Material.Light.BaseDialog" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog that has a nice minimum width for
-         a regular dialog. -->
-    <style name="Theme.Material.DayNight.Dialog.MinWidth" parent="Theme.Material.Light.Dialog.MinWidth" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog that does not include a title bar. -->
-    <style name="Theme.Material.DayNight.Dialog.NoActionBar" parent="Theme.Material.Light.Dialog.NoActionBar" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog.NoActionBar that has a nice minimum width for
-         a regular dialog. -->
-    <style name="Theme.Material.DayNight.Dialog.NoActionBar.MinWidth" parent="Theme.Material.Light.Dialog.NoActionBar.MinWidth" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog that has a fixed size. -->
-    <style name="Theme.Material.DayNight.Dialog.FixedSize" parent="Theme.Material.Light.Dialog.FixedSize" />
-
-    <!-- Variant of Theme.Material.DayNight.Dialog.NoActionBar that has a fixed size. -->
-    <style name="Theme.Material.DayNight.Dialog.NoActionBar.FixedSize" parent="Theme.Material.Light.Dialog.NoActionBar.FixedSize" />
-
-    <!-- Theme for a window that will be displayed either full-screen on
-         smaller screens (small, normal) or as a dialog on larger screens
-         (large, xlarge). -->
-    <style name="Theme.Material.DayNight.DialogWhenLarge" parent="Theme.Material.Light.DialogWhenLarge" />
-
-    <!-- Theme for a window with a dark action bar that will be displayed
-         either full-screen on smaller screens (small, normal) or as a dialog
-         on larger screens (large, xlarge). -->
-    <style name="Theme.Material.DayNight.DialogWhenLarge.DarkActionBar" parent="Theme.Material.Light.DialogWhenLarge.DarkActionBar" />
-
-    <!-- Theme for a window without an action bar that will be displayed either full-screen
-         on smaller screens (small, normal) or as a dialog on larger screens
-         (large, xlarge). -->
-    <style name="Theme.Material.DayNight.DialogWhenLarge.NoActionBar" parent="Theme.Material.Light.DialogWhenLarge.NoActionBar" />
-
-    <!-- Theme for a presentation window on a secondary display. -->
-    <style name="Theme.Material.DayNight.Dialog.Presentation" parent="Theme.Material.Light.Dialog.Presentation" />
-
-    <!-- Material user theme for alert dialog windows, which is used by the
-         {@link android.app.AlertDialog} class. -->
-    <style name="Theme.Material.DayNight.Dialog.Alert" parent="Theme.Material.DayNight.Dialog.BaseAlert" />
-    <style name="Theme.Material.DayNight.Dialog.BaseAlert" parent="Theme.Material.Light.Dialog.BaseAlert" />
-
-    <style name="Theme.Material.DayNight.SearchBar" parent="Theme.Material.Light.SearchBar" />
-    <style name="Theme.Material.DayNight.CompactMenu" parent="Theme.Material.Light.CompactMenu" />
-
-</resources>
diff --git a/packages/DocumentsUI/res/values-sw720dp/styles.xml b/packages/DocumentsUI/res/values-sw720dp/styles.xml
index 0b03a94f294d0..d7c031e143ca7 100644
--- a/packages/DocumentsUI/res/values-sw720dp/styles.xml
+++ b/packages/DocumentsUI/res/values-sw720dp/styles.xml
@@ -16,7 +16,7 @@
 
 <resources xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <style name="DialogWhenReallyLarge" parent="@*android:style/Theme.Material.DayNight.Dialog">
+    <style name="DialogWhenReallyLarge" parent="@*android:style/Theme.DeviceDefault.Light.Dialog">
         <!-- We do not specify width of window here because the max size of
              floating window specified by windowFixedWidthis is limited. -->
         <item name="*android:windowFixedHeightMajor">80%</item>
diff --git a/packages/DocumentsUI/res/values/styles.xml b/packages/DocumentsUI/res/values/styles.xml
index 6d741aae8786b..8c4b77707fc1f 100644
--- a/packages/DocumentsUI/res/values/styles.xml
+++ b/packages/DocumentsUI/res/values/styles.xml
@@ -16,7 +16,7 @@
 
 <resources xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <style name="DialogWhenReallyLarge" parent="@android:style/Theme.Material.DayNight.DarkActionBar" />
+    <style name="DialogWhenReallyLarge" parent="@android:style/Theme.DeviceDefault.Light.DarkActionBar" />
 
     <style name="DocumentsTheme" parent="@style/DialogWhenReallyLarge">
         <item name="android:actionBarWidgetTheme">@null</item>
diff --git a/packages/PrintSpooler/res/values/themes.xml b/packages/PrintSpooler/res/values/themes.xml
index 05de5b79a6f9b..11fa99117c8b7 100644
--- a/packages/PrintSpooler/res/values/themes.xml
+++ b/packages/PrintSpooler/res/values/themes.xml
@@ -17,6 +17,9 @@
 <resources>
 
     <style name="PrintActivity" parent="@android:style/Theme.DeviceDefault">
+        <item name="android:colorPrimary">@*android:color/material_blue_grey_900</item>
+        <item name="android:colorPrimaryDark">@*android:color/material_blue_grey_950</item>
+        <item name="android:colorAccent">@*android:color/material_deep_teal_500</item>
         <item name="android:windowIsTranslucent">true</item>
         <item name="android:windowBackground">@android:color/transparent</item>
         <item name="android:windowContentOverlay">@null</item>
diff --git a/packages/Shell/AndroidManifest.xml b/packages/Shell/AndroidManifest.xml
index 640fb2922f298..9832b45d8ab31 100644
--- a/packages/Shell/AndroidManifest.xml
+++ b/packages/Shell/AndroidManifest.xml
@@ -128,7 +128,7 @@
 
         <activity
             android:name=".BugreportWarningActivity"
-            android:theme="@*android:style/Theme.Material.DayNight.Dialog.Alert"
+            android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert"
             android:finishOnCloseSystemDialogs="true"
             android:excludeFromRecents="true"
             android:exported="false" />
diff --git a/packages/VpnDialogs/AndroidManifest.xml b/packages/VpnDialogs/AndroidManifest.xml
index 32e1e6de687fb..375c5d8aeda9b 100644
--- a/packages/VpnDialogs/AndroidManifest.xml
+++ b/packages/VpnDialogs/AndroidManifest.xml
@@ -24,7 +24,7 @@
     <application android:label="VpnDialogs"
             android:allowBackup="false" >
         <activity android:name=".ConfirmDialog"
-                android:theme="@*android:style/Theme.Material.DayNight.Dialog.Alert">
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.DEFAULT"/>
@@ -32,7 +32,7 @@
         </activity>
 
         <activity android:name=".ManageDialog"
-                android:theme="@*android:style/Theme.Material.DayNight.Dialog.Alert"
+                android:theme="@*android:style/Theme.DeviceDefault.Light.Dialog.Alert"
                 android:noHistory="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
diff --git a/packages/WallpaperCropper/res/values/styles.xml b/packages/WallpaperCropper/res/values/styles.xml
index e438c84027dbf..a34b25a8dc31e 100644
--- a/packages/WallpaperCropper/res/values/styles.xml
+++ b/packages/WallpaperCropper/res/values/styles.xml
@@ -15,13 +15,13 @@
 -->
 
 <resources>
-    <style name="Theme.WallpaperCropper" parent="@android:style/Theme.Material.DayNight">
+    <style name="Theme.WallpaperCropper" parent="@android:style/Theme.DeviceDefault">
         <item name="android:actionBarStyle">@style/WallpaperCropperActionBar</item>
         <item name="android:windowFullscreen">true</item>
         <item name="android:windowActionBarOverlay">true</item>
     </style>
 
-    <style name="WallpaperCropperActionBar" parent="@android:style/Widget.Material.ActionBar">
+    <style name="WallpaperCropperActionBar" parent="android:style/Widget.DeviceDefault.ActionBar">
         <item name="android:displayOptions">showCustom</item>
         <item name="android:background">#88000000</item>
     </style>
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 29c65dbea8a6c..76226b4bcd455 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -292,7 +292,7 @@ public final class SystemServer {
     private void createSystemContext() {
         ActivityThread activityThread = ActivityThread.systemMain();
         mSystemContext = activityThread.getSystemContext();
-        mSystemContext.setTheme(android.R.style.Theme_Material_DayNight_DarkActionBar);
+        mSystemContext.setTheme(android.R.style.Theme_DeviceDefault_Light_DarkActionBar);
     }
 
     /**