OldTwitch by ktg5

OldTwitch is a free browser extension to bring back the old Twitch look while supporting all the modern stuff.
The extension overwrites the current Twitch page with it's own pages, styling & scripts to bring back the older look. Temporarily switching back is as easy as clicking on one button. OldTwitch was designed to be easy-to-use and also incorporate as many features as possible for advanced users, providing many settings & multi-language support.