@360alaska that's looking great! I'd love to see what it looks like installed.
I tried my hand painting the 9500 jaz drive bezel I cooked up a while ago, but I wasn't able to find exactly the same "smokey beige" Rustoleum, and sadly, it wasn't the right color. I was only able to source the "painters touch" variety, rather than the "american accents" you recommended.. for whatever reason, the painters touch version has a slight (but definitely visible) pinkish hue to it. Just in case anyone out there is trying going down this path, make sure you get the right one.
I was able to find another Rustoleum color, Painter's Touch Premium Ultra Matte, which is much much closer to (though not exactly matching) the OG Macintosh beige.
here's my results:
matches pretty closely with the AEKII keycaps, which haven't yellowed like the rest of the plastic.
here it is against the painted metal case of my 8100. The lighting sucks (and my camera phone's white balance isn't great), but you can see that it's almost the same, but isn't quite 100% matching. You can also see here how improved it looks compared to the unpainted white plastic cd rom bezel installed on the 8100.
Against the bezel plastic of the rest of the case, though, it still sticks out thanks to the yellowing of the original plastic. I'm not really sure how I feel about that since even if I had a factory original pristine part, it would have the same problem.
and here's the paint I ended up using, in case it's helpful for anyone.