La divination des couleurs (Color vision)
A cube with six different color, one on each side, and an opaque plastic box with lid are passed for examination. You ask someone to place the cube into the box, remembering which color is on top, and then cover the box before handing it to you behind your back. After a brief moment you confidently describe the very color being mentally projected to you. Everything can be examined. Everything you need to perform this beautiful feat of mentalism is included. Easy to do !