Throngs of excited runners crouch along the starting line, all dressed in pristine white T-shirts. As the Color in Motion 5K begins, the sea of bodies sets off along the course, where handfuls of purple-, blue-, and yellow-colored powder start flying in from the sidelines. The safe concoction of cornstarch and dye sprinkles onto faces, shirts, shorts, and skin, dressing runners in a technicolor haze. Teams or individuals make their way through the 5K course, and finish the race wearing a pallet of washable and biodegradable paint. Each race partners and benefits local charities, with racers running individually, in teams, or sponsored by their favorite Crayola color.