Your eyes can paint colours onto blank objects. I swear! Just stare at the red dot in this optical illusion for 10 seconds and you'll see the black and white cityscape be transformed; each building will have its own nuanced colour. Magic!
It's the powerful effect of afterimages. The optical illusion, spotted by Charlie White, is an old favourite. By focusing in on the dot, you're temporarily burning your retina in with different colours. Once the illusion flips white, your eyes will still see the after-effect of the colours. Isn't it always fun to screw with your eyeballs?
For a better view, click here to the see the image larger: