Remember #TheDress? Of course you do. It took the internet, the world, the our entire human populace by storm in one night. Here's another crazy color-changing image that's been going viral on Twitter.
What do you see? Pink lips and nails? Or dark red? It doesn't actually change per person, but by the environment--browser, website, computer, phone--that sort of thing. Click on the image in the embedded tweet below as an example.