Original is the only way to go. Your upholstery is very striking. I keep going back looking at that last pic and although a lot of people would think it looks dated, to me it looks as fresh as the day it was originally designed. Of course, these are the same people that will go out and buy the funky shaped Supras with the funky shaped cushions that glow in the dark.
Working on my Comp right now and planning to have the upholstery done this fall. It is just white with red piping but I hope it looks as fresh as yours. I would love to do the new Chill Tech vinyl on mine.
No official Southern Supra Reunion this year but stay tuned for future gatherings.