Replace do not disturb PNGs with a vector drawable.

app/src/main/res/drawable/ic_do_not_disturb.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FFFFFF" android:pathData="M12,2C6.48,2 2,6.48 2,12s4.48,10 10,10 10,-4.48 10,-10S17.52,2 12,2zM4,12c0,-4.42 3.58,-8 8,-8 1.85,0 3.55,0.63 4.9,1.69L5.69,16.9C4.63,15.55 4,13.85 4,12zM12,20c-1.85,0 -3.55,-0.63 -4.9,-1.69L18.31,7.1C19.37,8.45 20,10.15 20,12c0,4.42 -3.58,8 -8,8z"/>
+</vector>

app/src/main/res/menu/details2.xml

@@ -9,13 +9,13 @@
         app:showAsAction="ifRoom"/>
     <item
         android:id="@+id/action_ignore_all"
-        android:icon="@drawable/ic_do_not_disturb_white"
+        android:icon="@drawable/ic_do_not_disturb"
         android:title="@string/menu_ignore_all"
         android:checkable="true"
         app:showAsAction="never"/>
     <item
         android:id="@+id/action_ignore_this"
-        android:icon="@drawable/ic_do_not_disturb_white"
+        android:icon="@drawable/ic_do_not_disturb"
         android:title="@string/menu_ignore_this"
         android:checkable="true"
         app:showAsAction="never"/>