^^^ That always works. Or, you could make an alternate universe uniform (not necessarily mirror universe) and pick purple, or hunter-green instead of the done-to-death red/gold/blue designs.
I did a variation on the movie uniforms - originally it was going to be mirror universe, but then I decided to go for prime universe, as Starfleet SEALs.
Worked out pretty well, I think. Here's
the original site link. This was probably almost 20 years ago, BTW.