From what I know, and whats on Memory-Alpha, division for the Wrath of Khan Uniform is as follows: White-Command; Gold-Ops., Helm, Engineering; Light Green- Medical, Sciences; Grey-Gray – operations division, communications and navigation branches; also sciences division, scientific research and technical branches; Dark Green – operations division, security branch; Red – cadets, trainees and junior officers; Light Blue – special services; and Black - enlisted & noncommissioned officers.
The medals on the shoulder strap indicate rank.
I agree on default uniforms for ship's crew.
Your link leads to an empty memory alpha page about uniforms. Your assertion isn't very convincing, though, as everyone on the bridge wore the same uniform regardless of their career path.
I absolutely agree that you should be able to create a template, save it, and apply it with a single click to any character. In fact, an exact duplicate of the captain's uniform should be the default for all new BOs. No clicking.
Would surely be simple to add into the game and would make a lot of sense.