To be honest, I'd personally advise against red and black and/or silver, it seems like the most common custom colour scheme out there. Check here to see most of the custom mandalorian costumes:
http://www.mandalorianwarriors.com/images/profiles/customs
Some of the ones I've seen are really nice, like Foxbatklr and Danakin's (see bottom), but I think they're becoming a bit overdone. But then again, it is your suit. You could always do something really different and creative with it. I know you didn't say you were using silver, but these two show some how creative you can get.
[ATTACH=full]222[/ATTACH]
[ATTACH=full]223[/ATTACH]