Facebook Gaming - Watch and stream live games on Facebook
VivaldiFox - An add-on that allows colouring Firefox in a Vivaldi style fashion
Mevo by Livestream - The live event camera
automaticDark - Time-Based Theme Changer - Set Firefox to change the UI to a dark theme during the night and change back to a light theme during the day!
Twitch Creative - Watch artists create. Twitch expands into the arts.
Dark Reader - Reduce eye strain in your browser with this extension that provides a dark theme for browsing.