Here goes my cartoon OCD...I always notice mess ups in cartoons:
When one of those Hulking guys pats the other's back, he still has the harness on, and then doesnt.
When Anakin is talking to Obi-Wan with his hand wrapped, his scar is there, and then blue again.(I think. I dont know if it's exactly right, it just hit me.)
Then when Anakin runs off to his starfighter, it's still blue(the scar).