Magic Stop Light Cards
Two black plaques each in it's own clear plastic sleeve are shown. One is blank and the other has three colored spots; red, yellow and green, just like a traffic light. A colored spot is selected, and both plaques are removed from their sleeves and place one on each of the spectator's hands. A command is given and the selected spot vanishes from one plaque and appears on the other while in the spectator's hands. The plaques can be examined. Quick to learn, easy to do.