diff --git a/res/values-v21/themes.xml b/res/values-v21/themes.xml
index 752864db1..164a717ee 100644
--- a/res/values-v21/themes.xml
+++ b/res/values-v21/themes.xml
@@ -2,11 +2,11 @@
 <resources>
 
     <style name="TextSecure.DarkTheme" parent="@style/TextSecure.BaseDarkTheme">
-        <item name="android:navigationBarColor">@color/core_grey_90</item>
+        <item name="android:navigationBarColor">#ff010101</item>
     </style>
 
     <style name="TextSecure.DarkNoActionBar" parent="@style/TextSecure.BaseDarkNoActionBar">
-        <item name="android:navigationBarColor">@color/core_grey_90</item>
+        <item name="android:navigationBarColor">#ff010101</item>
         <item name="android:colorControlActivated">@color/signal_primary_dark</item>
     </style>