Think you've got a sharp eye? Well, only a small percentage of people—just 9%—can correctly identify the colours in this mind-bending optical illusion. At first glance, it might seem like an ordinary black-and-white painting, but take a closer look, and your brain might just play tricks on you!
Imagine two versions of the famous painting Girl with a Pearl Earring. One version is clearly black and white. The second version, however, has diagonal coloured lines running across it.
