My friend's sister has done a few for him. They're completely Sharpie I believe. The problem is sealing the artwork so it will hold up to all the abuse we put our skis through. She def did a sick job on these skis though.
IF you just want solid colors, I've seen alot of people who simply duct tape theirs. not exactly a proffesional look but hey if your skis are already beat up they can only get better..
"But your young you got a lot of drugs to do, girls to screw, parties to crash, sucks to be you. If I could take it all back now, I wouldn't I would've did more shit that people said that I shouldnt" -Slim Shady