How's about designing a blue-ish uniform; hard wearing that can be used for combat situations and normal day to day wear; shortish jacket so that it doesn't get in the way of webbing or get caught in machinery; couple of generous breast pockets; perhaps an eagle on the shoulders above the airman rank insignia attached to the sleeve (officers on epaulettes). Could be made of different materials if a rank differentiation needed.
Oh, you could also call it a "Battle Dress"