If you're working on WWII American or British aircraft, it'll be difficult to get away from Zinc Chromate. That is, if you want to represent accuracy. Use any color you like but most of those a/c interiors, bays, etc.. were good ol' chromate green.
Here's a couple of pics I took a few days ago of the original interior in a B25. It was a beautiful green through n through
Bill.
On the bench: Lindberg 1/32 scale 1934 Ford Coupe and a few rescue projects.
In queue: Tamiya 1/35 Quad Tractor or a scratch build project.