Hey guys, I don't mean to disrupt the thread here, I built my own helmet and the colors that I use work pretty well for this build.
For the black I use Textured Black from Rusoleum
For the red I use Colonial red from Rustoleum
For the badge I use gold Rub n Buff
Then I give it a black wash followed up by a Grey wash to get that dirty dusty look.
Works pretty well for my buckets, hope that helps some of you guys with these awesome looking castings!