Messaging: use white nav bar

Change-Id: I0ac3ca705efe208a76eb4fe40f22e7cd8456515a
Signed-off-by: Joey <joey@lineageos.org>

res/values-v27/styles.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2018 The LineageOS Project
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<resources>
+    <style name="BugleBaseTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <item name="android:navigationBarColor">@color/navigation_bar_bg</item>
+        <item name="android:navigationBarDividerColor">@color/navigation_bar_divider</item>
+        <item name="android:windowLightNavigationBar">true</item>
+    </style>
+</resources>

res/values/lineage_colors.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
     Copyright (C) 2016 The CyanogenMod Project
+    Copyright (C) 2018 The LineageOS Project
 
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
@@ -17,4 +18,7 @@
 <resources>
     <color name="lineage_accent">#FF9800</color>
     <color name="button_text">#000000</color>
+
+    <color name="navigation_bar_bg">@android:color/white</color>
+    <color name="navigation_bar_divider">#1f000000</color>
 </resources>