What To Use To Fix Damaged Lining On Engines?

Recently I got a Talk N Action Gordon, he's not in the greatest shape and needs some restoration, especially on the lining, on the splashers its almost all gone, I was wondering though, what should I use to re-add it on, should I be using paint or maybe a permanent marker? Also what brand should I use to get the job done in a way that makes it look exactly the same as it would have done all those years ago?