Performer shows five plastic (Acrylic) domino-like blocks with different colored spots on them and an opaque black bag. A spectator is given the five blocks and the bag. They are asked to place any one of the blocks in the bag, close the bag and hand it to the performer behind his back.
Amazingly the performer can immediately reveal the color of the block in the bag behind his back!
We supply you the five special blocks and the bag.
The effect can be repeated as often as you like.