Update ThemePicker's dark theme colors

Bug: 129092060
Change-Id: I1d0af5495ed552451aae7899678426b364a366d4
diff --git a/res/layout/fragment_clock_picker.xml b/res/layout/fragment_clock_picker.xml
index 1528666..e7530f3 100644
--- a/res/layout/fragment_clock_picker.xml
+++ b/res/layout/fragment_clock_picker.xml
@@ -36,7 +36,7 @@
                 android:id="@+id/clock_preview_pager"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:background="@color/secondary_color"
+                android:background="@color/preview_pager_background"
                 app:layout_constrainedHeight="true"
                 app:layout_constraintBottom_toTopOf="@id/options_container"
                 app:layout_constraintEnd_toEndOf="parent"
diff --git a/res/layout/fragment_grid_picker.xml b/res/layout/fragment_grid_picker.xml
index 467a620..182d795 100644
--- a/res/layout/fragment_grid_picker.xml
+++ b/res/layout/fragment_grid_picker.xml
@@ -36,7 +36,7 @@
                 android:id="@+id/grid_preview_pager"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:background="@color/secondary_color"
+                android:background="@color/preview_pager_background"
                 app:card_style="screen_aspect_ratio"
                 app:layout_constrainedHeight="true"
                 app:layout_constraintBottom_toTopOf="@id/options_container"
diff --git a/res/layout/fragment_theme_picker.xml b/res/layout/fragment_theme_picker.xml
index dbb633e..d38e67f 100644
--- a/res/layout/fragment_theme_picker.xml
+++ b/res/layout/fragment_theme_picker.xml
@@ -36,7 +36,7 @@
                 android:id="@+id/theme_preview_pager"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:background="@color/secondary_color"
+                android:background="@color/preview_pager_background"
                 app:layout_constrainedHeight="true"
                 app:layout_constraintBottom_toTopOf="@id/options_container"
                 app:layout_constraintEnd_toEndOf="parent"
diff --git a/res/values-night/colors.xml b/res/values-night/colors.xml
index 4037f4d..129d364 100644
--- a/res/values-night/colors.xml
+++ b/res/values-night/colors.xml
@@ -18,7 +18,7 @@
 <resources>
     <color name="theme_preview_icon_color">@color/white_70_alpha</color>
 
-    <color name="icon_thumbnail_color">@color/black_87_alpha</color>
+    <color name="icon_thumbnail_color">@color/white_88_alpha</color>
 
     <color name="control_grey">#b3b3b3</color>
     <color name="switch_track_tint">#171717</color>
@@ -39,4 +39,8 @@
     <color name="divider_color">@color/white_14_alpha</color>
 
     <color name="edit_background_base">@color/material_white_100</color>
+
+    <color name="cover_title_color">@color/white_88_alpha</color>
+
+    <color name="preview_pager_background">@color/google_grey900</color>
 </resources>
diff --git a/res/values/colors.xml b/res/values/colors.xml
index b63f8ff..755dedf 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -19,6 +19,7 @@
     <color name="black_14_alpha">#24000000</color>
     <color name="white_14_alpha">#24FFFFFF</color>
     <color name="google_grey700">#5f6368</color>
+    <color name="google_grey900">#202124</color>
 
     <color name="status_bar_color">#ffffffff</color>
 
@@ -58,4 +59,8 @@
     <color name="divider_color">@color/black_14_alpha</color>
 
     <color name="edit_background_base">@color/google_grey700</color>
+
+    <color name="cover_title_color">@color/black_87_alpha</color>
+
+    <color name="preview_pager_background">@color/secondary_color</color>
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index c4c5d4d..fd24414 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -91,7 +91,7 @@
 
     <style name="CoverTitleTextAppearance" parent="CardTitleTextAppearance">
         <item name="android:textSize">@dimen/card_cover_title_text_size</item>
-        <item name="android:textColor">@color/black_87_alpha</item>
+        <item name="android:textColor">@color/cover_title_color</item>
     </style>
 
     <style name="FontCardTitleStyle" parent="HeaderTextAppearance">