If you really like your design, perhaps consider bringing the lines in from the edge of the plates. What the guys above are saying is that the lines may merge with the background of your flightsuit, making it look smaller. You need your edges to offset the colours you choose.
Green also looks best in my opinion, but if the guy is an assassin in the mythical sense, would he use a bright offset colour?
However, I wouldn't concentrate on any job role for your kit right now, if you're getting this ready to go to Apps, then concentrate on getting the basics done, we have brigades after you become a member to help you go in a direction, but firstly concentrate on passing through the CRLs.