Flip flop season is over, at least in Northern Michigan, but this viral picture of a pair is spreading quickly across the internet.
The pic was posted to social media last week, igniting a fiery debate over flip flops.
The question: do you see blue and black, or blue and brown?
Others have suggested blue and gray, and even white and gold.
There is science behind it. It all has to do with the way your brain interprets the light coming into your eyes.
Cataracts, colorblindness and eye disease can also play a role.
According to Time Magazine, the flip flops are actually blue and black.
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