The Magician displays an ordinary black bag to the audience.
The bag is turned inside out revealing the inside (now the outside) is red in color.
The bag is once again turned inside out revealing a white bag.
This is repeated revealing a yellow bag, then a green bag.
The green bag has a zipper, and may be opened to produce an item.
Deceptive black border keeps the colors a surprise!. A baffling comedy effect.