INSTALLATION/USE:
To install this skin:
1. Copy "skins.xml" as well as the "firefault" and "default" folders into Firestorm's "skins" directory. Your file management application should give you an option to "merge" these files into the pre-existing directories. Choose that.
2. Start or restart Firestorm.
3. In the top bar, to go View/Avatar > Preferences to open the Preferences window.
4. Click on the "Skins" tab.
5. Select "Firefault" and click "OK".
6. Restart Firestorm.

NOTES: 

- /firefault/settings.xml currently sets the following upon startup: 
 >V7-style chat headers and console
 >V7-style navigation bar
 >V7-style context menu instead of pie menu
 (If you want, you can simply remove this file and/or make any changes you like)
 
- You will likely need to re-install this skin every time you update Firestorm (at least on Linux).

