I just took the slide off, heated the area I wanted colored up with a lighter and just touched the a crayon to it. It should melt the crayon easily. Once it was cooled down I just rubbed the excess off with a rag. Really easy to do and really looks cool. I think it would look really cool red. When this were's of I might try that.
EDIT: it doesn't take very long to heat it up with the lighter, if you hold it on too long it will get that black/carbon build up that's kind of a pain to clean off. I'd clean it off before you try the crayon.
Wait, was this thing on?
Last edited by theropinfool; 02-17-2012 at 04:50 PM.