The correct interior color changes so much when subjected to different light intensity and types of light, and from viewing it at different angles, that it is like a chameleon and hard to define accurately. I have heard different people describe it as brownish, silvery, tan, even olive drab-like (I think that particular guy drinks too much).
The thing about it though, is that I know it when i see it. At least I think I do. Rustoleum 7272 works for me.
Carl

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission