I used LeftWM for a while, it's a window manager built in rust. One of the cool things about it was its themes functionality. You put all your dot files in a particular directory for things like your bar, and then you can save and switch multiple themes with a short command. Had some interesting community ones too like one based on the Star Trek TNG computer terminals. Ended up moving away from it after a while because it just didn't quite feel polished enough for a daily deiver yet and I got a little tired of the constant tweaking