An absolutely killer color changing deck routine! Effect, From a blue backed deck, the performer removes three face down cards from three different places. A fourth card is selected. Each of the three initial cards are shown to match the selected card exactly. The performer remarks that the only way the trick would be possible is if the four cards came from four different decks. Accordingly, the backs of three of the cards change from blue to black, yellow and white, leaving four cards with four different colored backs! For the climax it is revealed that none of the four cards could have come from your deck, because it is spread and is seen to be red!