Just because you're a clone fighting for the Jedi and the Republic doesn't mean you can't find the time to accessorize your trooper armor. Dave Filoni, director for the new animated movie and series Star Wars: The Clone Wars explains how they tried to personalize many of the clone soldiers with personalities, tattoos, and fancy haircuts. Now you can clearly tell the difference between gritty clone Rex and noble clone Commander Cody (one of them dyed his hair). Click through for a closer look into the minds of our killer clones.
Filoni explained that since they made the clones more individual, the audience should then care about them more and care about what happens to the clones on the battlefield. I see their logic, but I'm still probably going to have a difficult time distinguishing between any of them no matter how fancy their helmets are.