This article on architectural color theory - "why were so many control rooms seafoam green" - is really interesting: https://bethmathews.substack.com/p/why-so-many-control-rooms-were-seafoam
Interesting article. I never really thought about the wall colours that much even though I have spent a lot of time in control rooms.
There are still a fair number of older industrial control rooms in those colours. Newer ones are more often just off-white.
Most panels are still ANSI 61 grey though unless they have a special status/function.