Firefox dark-mode theme for vertical tabs using Sidebery.
Inspired by VerticalFox.
- Install Sidebery
- Download the source files:
- Activate Firefox customization
- Go to
about:config
- Set
toolkit.legacyUserProfileCustomizations.stylesheets
totrue
- Go to
- Open your profile folder (Hint:
about:support
)- Create a folder named
chrome
if not yet done - Move userChrome.css into
chrome
- Create a folder named
- Go to Siderbery settings and open the Styles editor
- Paste sidebery_style.css into the editor
- Optional: Import the Siderbery addon settings from settings_export.json