Stranger's Gallery by John Bannon

Stranger's Gallery by John Bannon is a contemporary gem in the world of colour-changing deck routines. This trick is a crowd's favourite, and its simplicity in execution is its secret weapon. The way it captivates an audience is akin to a fireworks display—mesmerising and unforgettable.
The best part? You don't need superhuman sleight of hand skills to nail it. Once you see the audience's reaction, you'll understand why it's earned its reputation as a true game-changer.

Effect

From a blue-backed deck, the performer removes three face-down cards from three diffrent places. A fourth card is selected. Each of the three inital 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 from four different decks. Accordingly, the backs of three cards change from blue to black, yellow and white, leaving four cards with four diffrent 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 seen to be RED! Includes 10-page booklet and all the necessary gaffs specially printed by the U.S. Playing Card Company