Black MacBook @ Apple Store, Regents Street
Not only did I look at the black model but I also had a quick look at the white version (let's face it £150 extra just for black...?). I did notice that the white models seemed to have gone a little bit grey. Maybe it's the composition of the keyboard surround but it seems to attract the dirt. On the other hand the units in the Apple Store do get a lot of wear and tear.