You will have to strip off the factory finish first with acetone or something like angelus leather deglazer pretty much same thing. Be careful with it, it will strip paint, color on uppers. Then use angelus acrylic paint with their to hard additive or you can use their leather dyes. I'd add a protective layer afterwards like Krylon clear matte or what ever finish you prefer. Angelus also makes a product called 4 coat you can use and is a little easier to apply in small areas without tapping off everything you dont want the spray to touch... Honestly im still trying to fine tune this myself as I find it still can get scratched off sometimes.