Ninja Suit rainbow art and concept by Austen Sweetin. If you love ninjas, all humans, and rainbows, and would like to get a fist bump and a personalized blast of epic positive energy next time you see Austen, then this might be a good hoody for you. Pair with Austen's pro model Merino Wool Ninja Suit for maximum coziness before, during and after the mission du jour.