I do want to go with just a matte finish for the interior, just need to nail down the color.
FYI, I had to have a local paint shop adjust the paint I got from Jim Carter. It was way too dark, compared to interior parts that were protected from sunlight and the PO with his crappy rattle can paint job. When I first went to ask them about lightening it, they recommended I do a spray-out test first, which I did, and it didn't come out any lighter. They got it to a close enough match so my interior doesn't look like a cave.
If you have an interior part that still has original paint (inside the glovebox door, or under the trim for the dash) most good auto paint stores can do a match for you.