There are a variety of manufacturers that make an almost universal variety of paint colors that are compatible with plastic models. Testor's, Tamiya, Humbrol, Floquil and Badger are just some of the companies. Rust-O-Leum is also safe because it is fish oil based, but always test first to be sure.

One of the things that modelers don't generally realize is the first rule in models is there are no rules! Don't be afraid to look in military, automotive, marine or any other category. It's the color that counts, not the name on the bottle!