Sometimes the paint does weird things on these figures. I have seen paint that on one hand it was paler than the other, have seen a lot where overspray makes it look sloppy. The thing is if you think it was repainted and don't want it send it back. The odds are it isn't but if you think it is there is no reason to keep it if you don't want to. With most figures the price point isn't there for people to do touch ups, but the more expensive figures they might think it is. Bottom line is these figures weren't meant to be around for 30-40 years as collectables but were made as toys to play with. They didn't know when they painted them that all these years later we would be inspecting them for defect.
I have caviar dreams and McDonald's pockets