Do you want to have multiple color schemes that you can quickly switch between? If you have already built the configuration with a color scheme, the second time you build it should take much shorter. Changing between a fixed set of color schemes is also a proposed feature for Stylix: https://github.com/nix-community/stylix/issues/447

Similar tools you can check out are Tinted Theming, Pywal16 and Catppuccin.

I haven’t noticed a difference between server and client side decorations when using GTK apps, but it’s nice to have uniform server side decorations for apps that are not GTK

Those on Nix can also use Stylix which implements the same workaround