Yep Rob's hair is shorter because he had to cut it for his last movie "Water For ELephants" and from the photo i'm guessing it hasn't grown back to its usual length! And i'm not sure about the colour! hahaha its does look a lot darker!!
Thanks Mizzy x
it is shorter and if you look at other pic it looks black
yea it does look kind of dark i kind of like it short though