A black and white image of a clown takes on full color. This is done with a change bag, dye box, dye tube, cabby box or any device that will change a silk. Show the change bag empty. Put the black and white silk in the change bag with a few crayons or take imaginary colors off the kids clothing and add them to the bag. Produce the color silk of the clown and show the bag empty again. Silks measure approximately 16 inches square.