... to the lever and moved it back two notches, standing open-mouthed at the immediate result. The cream-and-brown streaks were making a picture! Moving another notch down caused the picture to skitter back and forth on the screen. With memories of TV tuning to guide him, Ross brought the other lever down to a matching position, and the dim and shadowy images leaped into clear and complete focus. But the color was still brown, not the black and ... — The Time Traders • Andre Norton