Opinions...

My dad has white in his gtx,i tried to talk him into black when he redid the car and he said the black doesnt "snap" like the white.I seen one like it this summer with black and he was right,white really brought it out.Bad thing is other than the dirt it seemed to yellow as well.37 years though im sure i will yellow a bit too!I will go with black on yours,has advantages as well as disadvantages.Shop around the internet,surely theres a white one out there
similiar body color as yours.Tough decision but its yours to choose.