diff --git a/core/res/res/values/colors_car.xml b/core/res/res/values/colors_car.xml
index 5698c7033460f..32671ac8f7522 100644
--- a/core/res/res/values/colors_car.xml
+++ b/core/res/res/values/colors_car.xml
@@ -95,7 +95,7 @@
     <color name="car_card_dark">@color/car_dark_blue_grey_700</color>
 
     <!-- The default color of a card in car UI. -->
-    <color name="car_card">@color/car_card_light</color>
+    <color name="car_card">@color/car_card_dark</color>
 
     <!-- The ripple colors. The "dark" and "light" designation here refers to the color of the
          ripple  itself. -->
diff --git a/core/res/res/values/themes_device_defaults.xml b/core/res/res/values/themes_device_defaults.xml
index 442106b988e10..3385527ee6ff0 100644
--- a/core/res/res/values/themes_device_defaults.xml
+++ b/core/res/res/values/themes_device_defaults.xml
@@ -1716,4 +1716,10 @@ easier.
         <item name="colorAccent">@color/accent_device_default_dark</item>
     </style>
 
+    <style name="Theme.DeviceDefault.Light.Dialog.Alert.UserSwitchingDialog" parent="Theme.DeviceDefault.NoActionBar.Fullscreen">
+        <item name="colorBackground">@color/background_device_default_light</item>
+        <item name="colorBackgroundFloating">@color/background_device_default_light</item>
+        <item name="layout_gravity">center</item>
+    </style>
+
 </resources>