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Sometimes all you need is a good brain teaser to make you take a step back and question your own sanity. This optical illusion brought to you by the BBC will leave you seeing colors that aren’t even there. This works because the receptors in your eyes adapt to the negative colors. When the black-and-white image returns, it appears to be in color for a few moments. If you think you’re being tricked, you can watch the video again and see that nothing but the only the negative and black-and-white image ever appears. The only thing tricking you is your own brain