This morning was the USO Color Blast 5km Fun Run on Okinawa.
The Color Blast is very similar to the Indian festival of Holi. Participants throw powdered paint at each other and everyone comes away from the event a lot more colorful than when they arrived.
The Color Blast combines throwing paint with a 5km run, and the paints used are waterbased and non-toxic. (This is not always the case in India. I had to throw away most of my clothes and scrub off a couple of layers of skin to remove the paint after shooting Holi in Jaipur.)