I used Rustoleum's Spruce Green for my armor. If you need help with weathering and such, use the search tool at the top, you'll find tons of stuff. As for the helmet, you'll need to cut out the T shape that's painted black, so it looks like a complete visor and not just a little window, trust me, if you don't it's going to look cheapO'. Go to rjsafety.com and scroll down til you see HF4118-DRK - Dark Green Faceshield. That's about as cheap and easy to work with as you're going to get. --- meh, I'll just explain the weathering real quick. Go and buy Rustoleums Aluminum color. Give your armor a good few coats and let it dry really well, 24 hrs for each coat is what I did. Then--seeing as you're an artist, I don't see you having much problem with this--take some vasaline (cause it's cheap and works fine) and paint on the scratches that you want. Now paint the whole thing with a few coats of that spruce green. Let that sucker dry totally. Finally, go back and wipe off the vasaline to show the silver thru. It gives it a nice layered effect. I went back and took some yellow to outline the scratches and bring them out a bit more. Use reference photo's if you're trying to be screen accurate.
Miggs
Miggs