Home Theater Cheyenne. When you choose the color you will paint your home theater room, you should avoid light, highly reflective colors. Walls that are painted in a light color will reflect the light from the screen back onto the screen. This will result in a loss of contrast. Painting your walls a darker color will help minimize this problem. You should also avoid high gloss paint, as well. This will help your screen and projector to perform the very best they can.