Australis, the new interface of the Firefox browser, is the most radical change to its UI since the release of version 4. It is less customizable, and looks completely different compared to the current stable version. While some users like it, others are not impressed by its new look and want to disable Australis in Firefox and restore the classic appearance. However, there is good news for every Firefox user: now it is possible to customize the appearance of Firefox's Australis UI and apply cool skins to the browser.