Personally, I prefer the colors of TOS due to the high visibility that they provide in a situation requiring quick identification. One of the reasons that TMP and even the TWOK changes were kind of odd to me was the lack of color consistency from TOS to the films. Though, an argument certainly can be made that the color scheme follows from concepts from "The Cage," especially with the jumpsuits, blue and beige coloring, among other things.
Don't get me wrong, I still like the TWOK uniforms and they are among my top favorite uniforms in the franchise. But, the gaudiness of the TWOK is a bit disconnected from TMP or TOS.
I think, if the TWOK jackets were reworked in their color a little, or if they used a different rank system, it would be more appealing to me. However, still a good look.