Flat white with 4 drops of deep green got me to the mint grey-green of much of the interior. I didn't thin it, but probably should have: while it goes on pretty thin it dries very fast!

Green diesel engines and ladders.

Green bulkheads, and some piping that will end up white.

Only a little of this will show (it's the inside of the hull) but it was a good way to test the paint. I used flat white as the base of this mint green paint so it actually dries to a mint green chalky look: just what I wanted.