i have a 1979 pontiac trans am. it was orig. sappire blue. right now im rebuilding the engine and there is blueing on the block, i think its from a shop. the interior is white leather. it looks just like the black that you see in a bandit. i was wondering if anyone could tell me how it is white since it is the only white leather seats i have ever seen.
My friend has his step-dad's Trans Am, forget the year, but its right around the same as your's. It too is a light metallic blue with a white interior, I think its vinyl though.
Anyway, to answer your question, it probably came with the white interior.
__________________ Apperance Mods: Firebird wheels of mysterious origin , Floormats , and a quarter sized dent behind the passenger door from a TV I dropped!
white leather inter.
, Floormats 
, and a quarter sized dent behind the passenger door from a TV I dropped! 
