I'm with Falin there on the OS DW topic; from what I remember, with the exception of Tor and one of his minions (who wore no helmet at all) every one of them was depicted with the funky DW helmet. Historically, the vast majority of all splinter groups went out of their way to create a 'new' or modified uniform to set them apart from those they were splintering from or rebelling against. It certainly makes sense that they would have some uniform aspect to their appearance, this case obviously being the helmet.
As for the colors; whenever one of them is depicted in the foreground, in any kind of 'clear' lighting, they have very dark grey or black armor with green, yellow or blue trim. The only time you see other colors is when they're in the background, distant, and that's simply an artistic tool to make them visible, but not focused on. Other than black or grey, I would be willing to accept extremely dark colors, but they would have to be dark to the point of almost black anyway, like Charleston Green.
Brian; I would love to see someone make the OS DW helmet! If you could be persuaded to mold it, and I have the sneaking suspicion you would, I would absolutely be interested in buying one ^_^.
Also, in regards to the armor; I feel that standard Fett is acceptable, but so too would a custom style plates based on the differences shown in Tor and other DW troops, mostly in the torso and shoulder plate areas. Sometimes they're shown near to standard in appearance, and other times completely different, so I'd call it almost anything that fits the mercs 'modern era' requirement, short of Legacy plates, as those come well after the times.
