lpd said:
It looks like R2's original holo projector was black and the new one is silver/metallic.
But I know someone (he's building one at the mo) who knows the guys who JJ talked to about the new R2 and I promise they know their stuff.
I like that R2 doesn't look exactly the same as he did 30 years ago. It makes it seem like he's seen a bit of action since we've last seen him. Maybe the holo projector went bad during that time and was replaced?