Default Themes

[Schottky]

I love Firefox, but the default theme in version 158.0 is awful.
Default themes should be basic and understated.
Floral themes become unpleasant to work with.

[dftf]

You can browse all official themes made by Mozilla here:
https://addons.mozilla.org/firefox/search/?promoted=line&type=statictheme 

Or even install this add-on...:
https://addons.mozilla.org/firefox/addon/firefox-color/ 

...then you can make your own theme here:
https://color.firefox.com/