diff --git a/libs/WindowManager/Shell/res/layout/letterbox_education_dialog_layout.xml b/libs/WindowManager/Shell/res/layout/letterbox_education_dialog_layout.xml
index e8edad15dfc39..413cfd78fd914 100644
--- a/libs/WindowManager/Shell/res/layout/letterbox_education_dialog_layout.xml
+++ b/libs/WindowManager/Shell/res/layout/letterbox_education_dialog_layout.xml
@@ -16,9 +16,7 @@
 <com.android.wm.shell.compatui.letterboxedu.LetterboxEduDialogLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:background="@android:color/system_neutral1_900">
+    style="@style/LetterboxDialog">
 
     <!-- The background of the top-level layout acts as the background dim. -->
 
diff --git a/libs/WindowManager/Shell/res/layout/letterbox_restart_dialog_layout.xml b/libs/WindowManager/Shell/res/layout/letterbox_restart_dialog_layout.xml
index ba9852c4dd6b3..5aff4159e135a 100644
--- a/libs/WindowManager/Shell/res/layout/letterbox_restart_dialog_layout.xml
+++ b/libs/WindowManager/Shell/res/layout/letterbox_restart_dialog_layout.xml
@@ -16,14 +16,10 @@
 <com.android.wm.shell.compatui.RestartDialogLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:background="@android:color/system_neutral1_900">
+    style="@style/LetterboxDialog">
 
     <!-- The background of the top-level layout acts as the background dim. -->
 
-    <!--TODO (b/266288912): Resolve overdraw warning -->
-
     <!-- Vertical margin will be set dynamically since it depends on task bounds.
          Setting the alpha of the dialog container to 0, since it shouldn't be visible until the
          enter animation starts. -->
diff --git a/libs/WindowManager/Shell/res/values/colors.xml b/libs/WindowManager/Shell/res/values/colors.xml
index 6e750a3d5e34c..965ab1519df45 100644
--- a/libs/WindowManager/Shell/res/values/colors.xml
+++ b/libs/WindowManager/Shell/res/values/colors.xml
@@ -41,6 +41,9 @@
     <color name="letterbox_education_accent_primary">@android:color/system_accent1_100</color>
     <color name="letterbox_education_text_secondary">@android:color/system_neutral2_200</color>
 
+    <!-- Letterbox Dialog -->
+    <color name="letterbox_dialog_background">@android:color/system_neutral1_900</color>
+
     <!-- GM2 colors -->
     <color name="GM2_grey_200">#E8EAED</color>
     <color name="GM2_grey_700">#5F6368</color>
diff --git a/libs/WindowManager/Shell/res/values/styles.xml b/libs/WindowManager/Shell/res/values/styles.xml
index 0a0c49f2d93f2..39d3deb683f06 100644
--- a/libs/WindowManager/Shell/res/values/styles.xml
+++ b/libs/WindowManager/Shell/res/values/styles.xml
@@ -80,6 +80,12 @@
         <item name="android:textColor">@color/tv_pip_edu_text</item>
     </style>
 
+    <style name="LetterboxDialog" parent="@android:style/Theme.Holo">
+        <item name="android:layout_width">wrap_content</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:background">@color/letterbox_dialog_background</item>
+    </style>
+
     <style name="RestartDialogTitleText">
         <item name="android:textSize">24sp</item>
         <item name="android:textColor">?android:attr/textColorPrimary</item>