I painted mine this weekend with a rattle can. Krylon fusion is a perfect paint for the application. It is made to stick to plastics and is flexible. It is good for outdoors, as it is often used for kids playground toys.
I did about 4 light layers of paint and 3 of automotive clearcoat. The finish is very durable, as I tried my hardest to be rough with it today with no negative results. The match on black paint is perfect