Sam's pretty good in this. He had different ideas about his character (that he should have a horrible, fake tan), that Marvel disagreed with. So his orange hands disappear after the first time we see him.
I watched this movie again yesterday and looked out for the orange hands. There is one scene where Justin Hammer is eating ice cream and the inside of his hands/palms look discoloured. That scene in particular is one of my favorites between Mickey and Sam, and even then if you didn't point that out I wouldn't have noticed. That must have been one of the first scenes that was shot because I didn't notice it during the senate hearing.
