In the process automation world, there is a trend to move away from
colorful user-interfaces, towards more "boring" colorschemes. The
argument is about situational awareness - by only using colors to
highlight abnormal situations, they become instantly recognizable to the
operators.
This design philosophy is outlined by the ISA-101 [1] under the name
"High Performance HMI". While it covers much more than just colors, I
think this is the most important part and the one that is most
applicable for our usecase.
So let's do a bit of HP HMI - reduce colors usage such that only
important information is highlighted.
[1]: https://www.isa.org/standards-and-publications/isa-standards/isa-standards-committees/isa101