GrapheneCamera: Themed icon

Change-Id: I2492392e54773382222e260a7540b063b0c7d0b2
diff --git a/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml b/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
index 7353dbd..515b77e 100644
--- a/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
+++ b/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
@@ -2,4 +2,5 @@
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@color/ic_launcher_background"/>
     <foreground android:drawable="@drawable/ic_launcher_foreground"/>
-</adaptive-icon>
\ No newline at end of file
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>