Add dark action bar color to colors.xml

chrome/android/java/res/values-v17/styles.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2014 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
 <resources>
     <!-- A theme for alert dialogs. The colors are copied from MainTheme, and the window
          dimensions are copied from *.MinWidth theme variants. Sadly there is no
          AppCompat.Light.Dialog.Alert or even AppCompat.Light.Dialog.MinWidth. -->
     <style name="AlertDialogTheme" parent="Theme.AppCompat.Light.Dialog">
@@ skipping 78 matching lines @@
     <style name="PreferenceSpinnerUnderlineView">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">1dp</item>
         <item name="android:layout_marginTop">2dp</item>
         <item name="android:background">@color/input_underline_color</item>
     </style>
 
     <style name="ThemeWithActionBar" parent="Theme.AppCompat.Light.DarkActionBar">
         <item name="android:windowBackground">@drawable/action_bar_activity_bg</item>
         <!-- Action bar color -->
-        <item name="colorPrimary">#263238</item>
+        <item name="colorPrimary">@color/dark_action_bar_color</item>
         <!-- Status bar color -->
         <item name="colorPrimaryDark">#161e21</item>
         <!-- Color of checkboxes, switches, buttons, etc. -->
         <item name="colorAccent">@color/pref_accent_color</item>
     </style>
 
     <!-- Alert dialogs -->
     <style name="AlertDialogContent">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">wrap_content</item>
@@ skipping 144 matching lines @@
     <style name="CastMediaRouteButton" parent="@style/Widget.MediaRouter.MediaRouteButton">
         <item name="android:background">@null</item>
         <item name="android:paddingTop">0dp</item>
         <item name="android:paddingBottom">0dp</item>
         <item name="android:paddingStart">0dp</item>
         <item name="android:paddingEnd">0dp</item>
         <item name="externalRouteEnabledDrawable">@drawable/ic_cast_dark_chrome</item>
     </style>
     
 </resources>