KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.
If you encounter a bug, proceed to https://bugs.kde.org, check whether it has been reported.
If it hasn't, report it yourself.
PLEASE THINK CAREFULLY BEFORE POSTING HERE.
Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.
I have no idea why Mozilla doesnt show this theme.
I use Breeze Dark, as I am a simple guy :)
But the "Breeze Dark" Theme on AMO (firefox insider name for addons.mozilla.org :D) is just wrong?
So I created my own one, with the Addon "Firefox Color" and the Plasma Color-Picker.
Enjoy!