Plenty of nix’d config, nix-colors theming for most applications. I’ve only been using linux for around 6 months, NixOS has really clicked with me.
My config might be sub-optimal in areas, but its gone through some heavy changes since its inception.
I tried it out for the first time, the other day. The defaults are so good that you could get away with not configuring it at all!
Unless you want theme customisations and you have particular donkeys and workflows obviously.