A startling series of visual card changes created by Didier Dupre and performed by Aldo Colombini. The routine is based on the Paul Gordon trick called "Spectrum." This is an amazing card trick which is fun to do and has a stunning climax. You show four cards which are mis-printed, in fact they have faces on both sides (the cards are clearly shown on each side). One card is placed in the pocket but it comes back to the packet in hand and this time it has a back. The other cards develop a back as well and you now show four cards with different colored backs and all can be examined!
A second routine is taught as well, were you show all backs and then you produce the four Aces (or a message, etc).
Requires a double-facer and a double-backer.