A most amazing- and easy- pocket trick! Very simple to do and to understand, and perfect for young magicians as well.
A cube with different colors on each side is given to your spectator. While your back is turned so you cannot see what he is doing, he chooses ANY color, then places the block into a small box with his chosen color facing up, and puts a cover on the box. Instantly you can tell which color was selected! Very mysterious! You can repeat this immediately with no fuss!