Launcher: color statusbar / navigation bar in primary color

Signed-off-by: tobiasKaminsky <tobias@kaminsky.me>

src/main/res/values-v21/styles.xml

@@ -73,4 +73,12 @@
         <item name="android:statusBarColor">@android:color/transparent</item>
         <item name="android:colorBackground">@color/bg_default</item>
     </style>
+
+    <!-- Launch screen -->
+    <style name="Theme.ownCloud.Launcher">
+        <item name="android:statusBarColor">@color/primary</item>
+        <item name="android:navigationBarColor">@color/primary</item>
+        <item name="android:windowBackground">@drawable/launch_screen</item>
+        <item name="android:textColorHint">@color/secondary_text_color</item>
+    </style>
 </resources>