Last updated:
65% of users voted this helpful
A theme is a type of Firefox add-on that changes the visual appearance of Firefox. This article describes how to find, install and manage themes in Firefox.
Table of Contents
What are themes?
A theme changes the appearance of Firefox, such as the color scheme and background image of the toolbars. The color scheme of menus and built-in pages will follow, based on whether the text color on your toolbar is light or dark. Some websites also will follow the same color scheme.
Firefox comes with a default System theme and optional Colorways, Light, Dark, and Alpenglow themes, but you can always install new themes.
Installing themes
- Click the menu button , click and select .
- Scroll through the suggested themes or visit addons.mozilla.org to browse more themes.
- Click on the theme's author to see more information about it.
- Click the button.
- To install a theme from addons.mozilla.org, click on the theme and select the button on the resulting page.
-
- Firefox will download the requested theme and may notify you that it has been installed.
Note: If you simply want to change the color scheme, Colorways by Firefox is a collection of themes you can choose from.
You can also install Mozilla's Firefox Color extension to change the color of tabs and toolbars, add a custom background, and more. See the Firefox Color Homepage for details.
Managing themes
Click the menu button , click and select .
- The theme being used will be shown at the top, under Enabled.
- Other available themes will be listed beneath, under DisabledSaved Themes.
Reset theme to default
- Click the menu button , click and select .
- If the Enabled theme is an optional or added theme, it will have a option.
- Click Disable. The default System theme will be enabled.
Switch themes
- Click the menu button , click and select .
- Scroll through the list of themes.
- Click Enable to use that theme.
Remove themes
To remove an installed theme that you previously added to Firefox:
- Click the menu button , click and select .
- Click the ellipsis (3-dot) icon that displays for the theme that you want to remove and then select Remove.
If you are not able to remove a theme, see Cannot remove an add-on (extension or theme).
Troubleshooting
- If you have a problem with Firefox, it may be caused by your theme or your theme's interaction with other add-ons. For troubleshooting instructions, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems.
- If you cannot install a theme, see Unable to install add-ons (extensions or themes).
