Take a look at this spinning disk. Do you see colors?
I see two colored regions: ochre bands about 1/3 and 2/3 of the way out, each surrounded by narrow olive bands. But this image is actually monochrome black and white: it's just a rotating version of this image:
This optical illusion is called Benham's top or Benham's disk, and no-one really knows why most people see colors. It's nothing to do with latency in RGB-displays: the effect works just as well as a physical device. The effect is dependent on the speed and rotation of the pattern: this Daily Mail article includes an interactive version that lets you control the speed and direction.
That's all for this week — we'll be back on Monday. Enjoy your weekend!