Notice that as soon as you click on the ' Use Theme' button, an information bar appears at the top: this because Firefox needs to restart before it can apply the new theme you selected: just click on the ' Restart Firefox' to change theme:.

Once you have found the theme you want to start or resume using, click on the ' Use Theme' button that appears in the theme listing (if you decide not to switch, and to keep using your current theme, just press the escape key (' Esc') to return to Firefox). Click on any of the Firefox themes currently installed, and you will see a preview screenshot (typically) displayed on the right hand side.The appearance of the ' Themes' tab in the add-ons window will of course depend on the current theme you are using (in our case, the ' Past Modern' theme, a nostalgic trip to the last days of Netscape, which introduced this wonderfully understated theme!).The Add-ons window will open, and contain several tabs at the top: select the ' Themes' tab to view a (scrollable) listing of all the themes you have installed so far for Firefox on this particular computer (under that user name, that is, since Firefox stores user preferences on a user-by-user basis, not in a central location for all users).

This is an umbrella term Firefox uses to refer to all additional functionality you have added to it, including ' Extensions' (like a toolbar), 'Plugins' (like the Flash player), and of course ' Themes', which allow you to completely customize the visual appearance of the entire browser: We assume that you are already inside the Mozilla Firefox web browser click on the Tools menu, and choose ' Add-ons'.Follow these simple steps to change the current theme in Firefox:

Theme for mozilla firefox start page