The T is predominately brown, although his/her spinnerettes are orange. A great deal of rump hairs are missing. He has a very nasty disposition. The pet store lady claims he use to be an "orangish" or "reddish" color.
That's an immature or a brown-phase Aphonopelma seemani, of which a major characteristic is the orangish or chestnut-colored spinnerettes. I've yet to see one of this species that had anything BUT a nasty disposition; by far they are the most nervous and defensive spiders I've kept.