Mozilla has introduced a new “Alpenglow” interface theme to Firefox as part of its version 81 update. Unlike the traditional light and dark themes desktop users are likely familiar with, Alpenglow adds a nice pop of orange and purple to your browser window, with hues that change dynamically based on your desktop’s…
source https://lifehacker.com/how-to-enable-firefox-81s-colorful-new-alpenglow-theme-1845184716