I don't even know if this is a good idea or not, but I need to get it out of my head. In SteamVR the headset gets a completely gray video signal if tracking is lost, from what I can tell. In most cases I think this means that only the optical tracking is lost, because on USB loss my memory tells me the headset blacks out entirely. In theory, would it be possible to use a two tone top/bottom image that gets aligned by the tracking from the supposedly still active IMU? If so we could have a horizon in the ...