Use custom title bar colour on older Android versions.

briar-android/res/values-v11/styles.xml

@@ -6,6 +6,7 @@
     </style>
     <style name="CustomActionBar"
            parent="android:Widget.Holo.Light.ActionBar.Solid.Inverse">
+        <item name="android:textColor">@color/action_bar_text</item>
         <item name="android:background">@color/action_bar_background</item>
     </style>
 </resources>
\ No newline at end of file

briar-android/res/values/color.xml

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <color name="window_background">#EEEEEE</color>
+    <color name="action_bar_text">#FFFFFF</color>
     <color name="action_bar_background">#2D3E50</color>
     <color name="button_bar_background">#FFFFFF</color>
     <color name="private_message_background">#FFFFFF</color>

briar-android/res/values/styles.xml

 <?xml version="1.0" encoding="utf-8"?>
-<resources>
-	<style name="LightTheme" parent="android:Theme.Light" />
+<resources xmlns:android="http://schemas.android.com/apk/res/android">
+    <style name="LightTheme" parent="android:Theme.Light">
+        <item name="android:windowTitleStyle">@style/WindowTitle</item>
+        <item name="android:windowTitleBackgroundStyle">@style/WindowTitleBackground</item>
+    </style>
+    <style name="WindowTitle">
+        <item name="android:paddingLeft">5dp</item>
+        <item name="android:textColor">@color/action_bar_text</item>
+    </style>
+    <style name="WindowTitleBackground">
+        <item name="android:background">@color/action_bar_background</item>
+    </style>
 </resources>
\ No newline at end of file