I always disable it. Having everything using the same exact colour palette is boring/homogenized. The themed icons are even worse, simultaneously killing iconography art and making it much more difficult to differentiate between apps in the app drawer quickly.
Is that the thing that colors parts of the UI based on your background? Because I despise that.
I don’t want things to change color. I want the UI to be predictable and stable, so I can use it without distraction.