Looks like sun-bleached is beating out brown. Who knows? :)
He is not the same one as my avatar. She was definitely black.
As far as his weight goes - yes, I agree he is a bit under.
The first photo was taken long before he was mine.
The second photo is the more recent of the two, and it makes him look much more angular than he really is.
He was borderline when we got him, and dropped off some after arriving (stress, diet change, what have you).
He has been gaining steadily and should be back to normal very soon.