Stare at this black and white wheel long enough and you may see a colour appear out of nowhere.
But incredibly, different people see different colours -and some may not see anything at all.
The wheel is called Benham's top and it creates an illusion of colour when black and white patterns rapidly change.
I feel like my head is spinning now after staring the wheel for sometime. Well, I only spot black, white and combat colors.....What do you see?