Hi, I'm learning SG and am using the videoplayer-master-channel sample. I have been trying to change the background color for the channel from gray and cannot get it to work. I've gone into the VideoScene.xml and changed Rectangle color, I've looked in CategoryScene.xml but don't see any background color settings. I checked manifest. Can anyone possibly point me in the right direction here? I basically want all my scenes to have same background color. With the old SDK, I used roAppManager to do this.