This is a great, effective and yet simple trick which is very easy to do. Four aces are cleanly shown and a spectator names any one of them - no force. The named ace is shown to be the only one with a different colored back. The effect can be repeated for the same person or a different spectator. For a surprise finish, the named ace is mistakenly shown to have a back that is the same color as the others. A simple magic gesture and the backs of the other three aces change to the OPPOSITE color! The entire routine is instantly reset and everything can be examined. Poker size Bicycle Rider backed cards and full instructions are included.