mute button in actionbar, no color change

app/src/main/java/org/schabi/newpipe/player/ServicePlayerActivity.java

@@ -164,6 +164,9 @@ public abstract class ServicePlayerActivity extends AppCompatActivity
             case R.id.action_append_playlist:
                 appendAllToPlaylist();
                 return true;
+            case R.id.action_mute:
+                player.onMuteUnmuteButtonClicked();
+                return true;
             case R.id.action_system_audio:
                 startActivity(new Intent(Settings.ACTION_SOUND_SETTINGS));
                 return true;

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

@@ -10,6 +10,13 @@
         android:visible="true"
         app:showAsAction="ifRoom"/>
 
+    <item
+        android:id="@+id/action_mute"
+        android:icon="?attr/volume_off"
+        android:title="@string/mute"
+        android:visible="true"
+        app:showAsAction="ifRoom"/>
+
     <item android:id="@+id/action_settings"
         android:orderInCategory="1"
         android:title="@string/settings"

app/src/main/res/values/strings.xml

@@ -448,6 +448,7 @@
     <string name="rename_playlist">Rename</string>
     <string name="playlist_name_input">Name</string>
     <string name="append_playlist">Add To Playlist</string>
+    <string name="mute">Mute</string>
     <string name="set_as_playlist_thumbnail">Set as Playlist Thumbnail</string>
     <string name="bookmark_playlist">Bookmark Playlist</string>
     <string name="unbookmark_playlist">Remove Bookmark</string>