An incredible colour changing deck routine. From a blue backed deck, the performer removes three face down cards. A fourth card is selected from the deck. The Three face down card match the chosen card. The performer remarks the only way this trick could work is if the cards all came from different decks. The backs of three cards then change from blue to yellow, black and white; the forth card remains blue, however for the climax the cards are spread to reveal the entire deck has changed from blue to red. This will knock their socks off!