Here's my situation. I have a Williams Apollo in which one side is original and in great condition; however, the other side has been completely repainted in blank white, a stronger white than is on the original side. The front also has a little repainting and of course some some flaking here & there. I should also say that this pin will be in a tight lineup, so the side currently repainted in blank white will only be visible at a high angle, and without much light.

There is a simple solution, and that would be to simply repaint everything; I think it is possible to get a stencil. However, I don't feel like spending the money or time to do that (I am not a stickler on cabinet restoration, and can live with an original cabinet fading), and I especially don't want to ruin the good original side. And I think I will take the opportunity to put a different design on the right side - a rough mosaic of the actual Apollo spacecraft in the same orange & blue color scheme - or maybe I'll just crib it from the other side, although there are a lot of round figures (not sure if they are perfectly round).

So, since I don't want to disturb the original side, I will need to use an off-white to repaint the front and the to-be-painted side. I don't see a problem getting such an off-white that is close enough (because the front & side are at different angles, they will look slightly off even if painted with the same paint), but I am wondering about is if the off-white paint will fade to become an even more off-white paint. Perhaps this is anecdotal, but in the 90s, I painted a cabinet in pure white, and it hasn't faded at all; maybe the quality of paint in the 60s was worse than that in the 90s & now?

I welcome any suggestions.

It's a "simple" solution, but would take a lot more work & cash, and ruin the original side that is in really good condition. If that side were not in good shape, sure, I'd redo everything. And as I've said, the other paint would be on other faces, so it doesn't share any space.