# User Style Customizations for Thunderbird Supernova


Tweak the header pane subject and sender font to be a little smaller.


## Usage

To enable:

**Settings > General** > scroll to bottom & select **Config Editor**

Search for `legacy`

Change `toolkit.legacyUserProfileCustomizations.stylesheets` to 'true'



To find your profile folder launch the Thunderbird binary with the -P switch or look for it in the Thunderbird configuration folder.

On Linux it is under $HOME/.thunderbird/

Create 'chrome' directory in the profile folder and place `userChrome.css` in there.

Restart Thunderbird for the changes to take effect.