How to get rid of Australis in Firefox

Few days ago, I wrote about an extension for Mozilla Firefox which will allow you to disable Australis, the new user experience in Firefox and get back the classic user interface. Today, I am happy to share with you that the extension has got a name, Classic Theme Restorer. This awesome extension works like a charm and allows you to get rid of Australis completely, right after install. As the author promised, the extension is available for download in time as Australis reached the nightly build of Firefox.