Benham Disc for Playdate

This is an optical illusion called the Benham Disc. When spun it creates the illusion of colour red, green and blue. This is especially interesting on the Playdate console given that it is a 1bit screen! You can use the crank if you wish, though best results appear to be with auto spin turned on (the A button to toggle) and Speed set to 3 (use up and down).