Has anyone tried to paint a helmet? I bought a nice Shoei helmet a couple of weeks ago, and got a great price on it, the only problem is with the flashy graphics on it. I have an airbrush that I've never used before, and figured on painting the helmet. Any suggestions on how to do it? Types of paint? Clearcoats? Don't have much knowledge of painting, but I do have a helmet or two that I can practice on. Thanks.