Not a direct answer to your question @tobiaseigen but:
We are actively working on getting things to the point where color palettes natively support light/dark mode, and making some other related improvements to make it easier to configure a color palette for these built in themes.
We are aiming to land some of that stuff in the coming weeks.
Once we do it’ll be a good time to revisit what else to consider prioritizing with regards to color palettes.