This may be tabu, but I used automotive vinyl wrap material for my highlighted areas. I figured I'd give it a try and if it didn't look good I could simply peal it off. It did turn out really well. I used 3M gun metal wrap. I made a template for the shapes and when I applied it, I gently hit it with a heat gun and it conformed perfectly. It has a sort of semi-gloss appearance. I even used it for the striping on the biceps and other areas. Those I did seal down with clear lacquer. Here is a quick photo of it, pay no attention to the shoulder bells, I put them on backwards...