[Android] Change incognito toolbar color back to #505050

chrome/android/java/res/values/colors.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>
     <!-- Common colors -->
     <color name="default_text_color">#333</color>
     <color name="default_primary_color">#f2f2f2</color>
     <color name="light_normal_color">#5A5A5A</color>
@@ skipping 126 matching lines @@
     <color name="contextual_search_promo_border_color">#C2C2C2</color>
 
     <!-- Progress Bar colors -->
     <color name="progress_bar_foreground">@color/light_active_color</color>
     <color name="progress_bar_foreground_white">@android:color/white</color>
     <color name="progress_bar_secondary">@color/google_grey_600</color>
     <color name="progress_bar_background">#3d4386f7</color>
     <color name="progress_bar_background_white">@color/black_alpha_30</color>
 
     <!-- Theme colors. Also used for toolbar background -->
-    <color name="incognito_primary_color">#424242</color>
+    <color name="incognito_primary_color">#505050</color>
 
     <!-- LocationBar colors -->
     <color name="locationbar_dark_hint_text">#969696</color>
     <color name="locationbar_light_hint_text">@color/white_alpha_70</color>
     <color name="locationbar_light_selection_color">#cc5595fe</color>
     <color name="locationbar_status_color">@color/light_normal_color</color>
     <color name="locationbar_status_color_light">#ffffff</color>
     <color name="locationbar_status_separator_color">#3d000000</color>
     <color name="locationbar_status_separator_color_light">#3dffffff</color>
     <color name="omnibox_focused_fading_background_color">#a6000000</color>
@@ skipping 53 matching lines @@
 
     <!-- Translate Infobar colors -->
     <color name="translate_overflow_menu_divider_color">#e0e0e0</color>
 
     <!-- Other colors -->
     <color name="selectable_list_item_highlight_color">#804281f4</color>
     <color name="media_viewer_bg">#000000</color>
     <color name="image_viewer_bg">#0e0e0e</color>
 
 </resources>