Use #969696 as (dark) text hint color in the Android omnibox.

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 107 matching lines @@
     <!-- 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_background">#3d4386f7</color>
     <color name="progress_bar_background_white">#4d000000</color>
 
     <!-- Theme colors. Also used for toolbar background -->
     <color name="incognito_primary_color">#505050</color>
 
     <!-- LocationBar colors -->
+    <color name="locationbar_dark_hint_text">#969696</color>
     <color name="locationbar_light_hint_text">#80ffffff</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>
 
     <!-- Find in Page colors -->
     <color name="find_result_bar_background_color">#bfffffff</color>
     <color name="find_result_bar_background_border_color">#bf666666</color>
@@ skipping 43 matching lines @@
     <!-- Bottom bar colors -->
     <color name="bottom_bar_shadow_color">#1d000000</color>
 
     <!-- Payments UI colors -->
     <color name="payments_ui_scrim">#000000</color>
     <color name="payments_section_edit_background">#f5f5f5</color>
     <color name="payments_section_chevron">#b2b2b2</color>
     <color name="payments_section_separator">#e0e0e0</color>
 
 </resources>