It was picture day^ Those have to be the cleanest flight deck uniforms I've ever seen.
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Also, I like the deck uniforms on a carrier, but they serve a very specific function in the Navy, on a carrier specifically, so it would be hard to argue for that level of color on a Starfleet vessel-possibly. I'm sure there are arguments either way.
I would prefer more color than the jumpsuits or the gray shoulder jumpsuits that we had later on. One idea that I kind of had is a bit of a basis from the TNG era uniforms, with the colored torso, but have the shoulders be the division color, or have shoulder boards for ranks, but still have black under the arms.
I also like the idea that was suggested that security and medical personnel have their own distinct uniform or look.