Unless it's a first-class, integral part of the experience (like VS Code), I don't even bother with any visual adjustments. It just adds cognitive dependencies and would only be there to satisfy some arbitrary aesthetic sensitivity. That's no good when things in the wild are rough and dirty. I don't want to be conditioned to some fragile setup of plugins upon plugins upon minute adjustments that only works perfectly in some certain pristine environment.
I enjoy having zero friction when moving around computers. I enjoy getting things done anywhere without anything ever getting in my way. It's very liberating.