Oh darn, it showed up in the post, and now it's gone...
Well, it was dark angels green for base color. Gold highlights around shoulder trim and eagle on chest. Black eyes, mouth grill and gun (with gun metal... I could also go bronze or silver with metallic pen? ). White emblems on shoulders (but could be metallic silver?).
There are other sharpie markers as well. Red, green, purple, black, blue, orange, yellow, etc... Some of them are called permanent paint markers, and are made to be used on metal, pottery, wood, plastic, etc...
About warprat... it is actually a combination of the "warp" and the "Stainless Steel Rat" by Harry Harrison. I have an avatar picture that Harry Harrison the author drew, and which I found and appropriated. I used the name in desperation after about 10 different tries with something more heroic sounding, LOL.
Some how, some people get war-prat out of it, and I can't figure out why... When I typed "prat" into the online dictionary it came up with "the buttocks." Do I resemble a butt? Maybe a butt head, because I am so smart, LOL!