The 2012 Colour Run is currently touring through 20 U.S. cities. The only requirement is wearing a white shirt. Throughout the run, participants are doused in bright pigments (cornstarch that is 100% natural and safe). Each kilometer is focused on a specific color – 1k is yellow, 2k is blue, 3k is green, 4k is pink, and the 5k finish is a “Colour Extravaganza” where a rainbow of hues are thrown.
