Issue 3769 - UI colours gone bad

mobile/android/base/toolbar/NavButton.java

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
  * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 package org.mozilla.gecko.toolbar;
 
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.util.ColorUtils;
 
 import android.content.Context;
@@ skipping 52 matching lines @@
     public void onLightweightThemeChanged() {
         final Drawable drawable = BrowserToolbar.getLightweightThemeDrawable(this, getTheme(), R.color.toolbar_grey);
 
         if (drawable == null) {
             return;
         }
 
         final StateListDrawable stateList = new StateListDrawable();
         stateList.addState(PRIVATE_PRESSED_STATE_SET, getColorDrawable(R.color.placeholder_active_grey));
         stateList.addState(PRESSED_ENABLED_STATE_SET, getColorDrawable(R.color.toolbar_grey_pressed));
-        stateList.addState(PRIVATE_FOCUSED_STATE_SET, getColorDrawable(R.color.text_and_tabs_tray_grey));
+        // Using ABB color palette. See https://issues.adblockplus.org/ticket/3769
+        stateList.addState(PRIVATE_FOCUSED_STATE_SET, getColorDrawable(R.color.abb_background_light_grey));
         stateList.addState(FOCUSED_STATE_SET, getColorDrawable(R.color.tablet_highlight_focused));
         stateList.addState(PRIVATE_STATE_SET, getColorDrawable(R.color.tabs_tray_grey_pressed));
         stateList.addState(EMPTY_STATE_SET, drawable);
 
         setBackgroundDrawable(stateList);
     }
 
     @Override
     public void onLightweightThemeReset() {
         setBackgroundResource(R.drawable.url_bar_nav_button);
     }
 }