I’m writing a virtual world framework application that is combining webrtc and cesium. I want to display a video in the back ground with the cesium earth in front of the video. I’ve actually done this with threejs and glge successfully by setting the backgroundColor to: rgba(0,0,0,0), setting the alpha to 0. When I set the backgroundColor of the Cesium.Scene to 0,0,0,0, I’m not getting the desired results. I’m currently using the CesiumWidget(I’m destroying the sky box and the atmosphere after creation), but I also have a version that manually creates the scene. Is there a way to make the backgroundColor handle the alpha properly?