Ronaldo Optical Illusion

Instructions

  1. Put your mouse right here --> (just make sure it's not over the picture)
  2. Stare at the cross in the middle of the picture for about 30 seconds.
  3. Move your mouse over the image. You'll see a colour photo, though it's really a black and white photo.

The longer you stare at the negative, the longer the colour version remains in your eyes.

If you don't move your eyes, you'll keep seeing colour.

Original post and comments.