At first i thought it was a terrible idea... then i looked at some of the other angles and noticed that its similar in style to a storm trooper outfit.
I've seen too many disgustingly dirty white MacBooks that made me want to barf. I feel like a white camera would get even dirtier from being handled often.
it's probably very easy for them to make the body white (just a different color plastic), probably a nice way to try and make some extra sales in the down economy :-)