- Why does your addon change the color of the theme's borders without users permission?
- Everything should be off by default: it's up to user what he want to enable
Thanks for your feedback.
The addon does exactly what it says in the description, including >temporary< highlighting of the UI border color. Resolving the warning, turning off the addon or switching off the border highlights in the addon preferences, all these actions restore your original theme color. It's temporary and non destructive.
I believe that how the defaults are now, it is the most useful to the average user. Importantly it can warn the user about problems they don't even know about, hence wouldn't enable when they configure the addon from a "everything off" default.