Grey Theme for Thunderbird Supernova

A simple grey theme for Thunderbird using legacy userChrome. This is a solid-colour theme using #e7e7e7 background which may help reduce eye-strain.

The blog post: Thunderbird Supernova grey theme

Status

Works for me.

Requirements

Thunderbird 115+

Installation

1. Enable userChrome in Thunderbird:

   • Navigate to Settings > General > Config Editor
   • Search for toolkit.legacyUserProfileCustomizations.stylesheets
   • Toggle to 'true'

2. Locate your profile directory:

   • Navigate to Help > Troubleshooting Information.
   • Under the Application Basics section, find the Profile Directory row.
   • Locate the profile which is in use; it will be labelled as: This is the profile in use and it cannot be deleted.
   • Click on Open Folder for the Root Directory. Your profile folder will open.

3. In your profile directory, create a new folder called 'chrome'.

4. Add userChrome.css and userContent.css to the directory 'chrome'.

5. Restart Thunderbird.

Licences

This project is made available under a GPL3 licence -- see COPYING for the full text.