This is incredible, thank you for linking.

You run it, display instantly looks better, and has a very nicely laid out set of features to play with

Even things like the WiFi flyout (a term I didn't know) can be changed: https://i.imgur.com/JHVvzPG.png

Appears its author even dedicated a blog post specifically to this: https://valinet.ro/2021/11/18/Functional-Windows-10-flyouts-...