I really didn't care for Luke's hair in ROTJ. I'm not sure why. It just looked flat. I've seen some behind the scenes footage of him rehearsing and stuff and his hair is a little bit longer and blonder. Slightly curled at the bangs in much the same way that it was in ESB (his hair was so adorable in ESB *squeeze*). I guess it looks a little dated. It looks like an 80's hair cut while the other 2 movies not so much (granted Luke did have a feather cut in ANH, but that style is back so it doesn't look dated right now.)