Cool. I'll have a look at that paint.
By the way... my 73 is very original and clean as far as the interior goes... there is no paint on my retractor covers. They're definitely textured, but it's moulded into the plastic. I plan on just hitting it with SEM black dye with flattener sprayed over to dull the finish.
This is my plan for the seat hinge covers as well as the window molding trim too. They look much flatter sheen than, say, the door panels. Trying to even out and darken the finish rather than make them shinier.
Unless of course, all these parts have simply dulled over the years. But I don't think that's the case...