Even the DSC starships don't all have the same grey or bronze hull colors so I don't know why they had to make the Enterprise charcoal grey and darker even than the TMP Era Refit. They could have left the color the way it was in TOS and the later series interpretations and just added more hull texture and details.
The more they overwork the plumbing the easier it is to stop up the drain.
The more they overwork the plumbing the easier it is to stop up the drain.