I had gotten white paint on my brown leather jacket. It was dried on there for 2 weeks before I realized it was there. I used simple body lotion (Palmer's Cocoa Butter Formula, to get specific) put it on top of the paint and scratched gently with my finger nail and It got Paint off my Leather Jacket!
"Goof Off" worked very well - simply apply some with a q-tip or cotton ball, gently rub for a minute or so and wipe off with a dry clean rag. Try repeatedly for heavy paint spots....worked great and didnt damage my very expensive black leather jacket. Good luck
Ha good luck... Just kidding try using nail polish remover...(been there done that) o and vanilla extract gets White paint off black t-shirt