Issue 7200 - Adjust UI colors

mobile/android/base/java/org/mozilla/gecko/toolbar/ShapedButtonFrameLayout.java

Index: mobile/android/base/java/org/mozilla/gecko/toolbar/ShapedButtonFrameLayout.java
===================================================================
--- a/mobile/android/base/java/org/mozilla/gecko/toolbar/ShapedButtonFrameLayout.java
+++ b/mobile/android/base/java/org/mozilla/gecko/toolbar/ShapedButtonFrameLayout.java
@@ -23,30 +23,28 @@
 
     public ShapedButtonFrameLayout(Context context, AttributeSet attrs) {
         super(context, attrs);
     }
 
     // The drawable is constructed as per @drawable/shaped_button.
     @Override
     public void onLightweightThemeChanged() {
-        // Using ABB color palette. See https://issues.adblockplus.org/ticket/3769
-        final int background = ContextCompat.getColor(getContext(), R.color.abb_background_light_grey);
+        final int background = ContextCompat.getColor(getContext(), R.color.text_and_tabs_tray_grey);
         final LightweightThemeDrawable lightWeight = getTheme().getColorDrawable(this, background);
 
         if (lightWeight == null)
             return;
 
         lightWeight.setAlpha(34, 34);
 
         final StateListDrawable stateList = new StateListDrawable();
         stateList.addState(PRESSED_ENABLED_STATE_SET, getColorDrawable(R.color.highlight_shaped));
         stateList.addState(FOCUSED_STATE_SET, getColorDrawable(R.color.highlight_shaped_focused));
-        // Using ABB color palette. See https://issues.adblockplus.org/ticket/3769
-        stateList.addState(PRIVATE_STATE_SET, getColorDrawable(R.color.abb_background_light_grey));
+        stateList.addState(PRIVATE_STATE_SET, getColorDrawable(R.color.text_and_tabs_tray_grey));
         stateList.addState(EMPTY_STATE_SET, lightWeight);
 
         setBackgroundDrawable(stateList);
     }
 
     @Override
     public void onLightweightThemeReset() {
         setBackgroundResource(R.drawable.shaped_button);