userChrome Themes work by Having the Firefox Browser read style-sheets .css within a certain directory of your Profile Folder. There are two easy ways to access this folder:

1. Go to the about:support page

• In the URL Bar, type about:support.
• Look at the Profile Folder row. Open the folder.
• In that folder, create a new folder named chrome (If it doesnt already exist).

2. Go to the about:profiles page

• In the URL Bar, type about:profiles.
• Your profile will say This is the profile in use and.... Click the Open Directory button in the Root Directory row.
• In that folder, create a new folder named chrome (if it doesnt already exist).

1. Download the latest version by clicking here. Or on the release page. (recommended).
2. In the theme zip file, copy the files from ffultimax.x.x folder into the chrome folder.
3. In the chrome folder youll see a file named user.js, move it out of the chrome folder and into the Profile Folder.
4. Restart Firefox. After Firefox is open again, delete the user.js file.
5. The user.js enabled userChrome, and adds settings like tab size, autohide, etc, in about:config.
6. Try it out, go to about:config then search for ultima.

1. Open a terminal in your Profiles chrome folder.
2. Or in the terminal, navigate to your Profiles chrome folder cd your\profile\folder\path\chrome.
3. In the terminal: git clone https://github.com/soulhotel/FF-ULTIMA.git to clone/update to the latest version.
4. In your chrome folder you'll have a file named user.js.
5. Move the user.js file OUT of the chrome folder and INTO your Profile Folder.
6. Restart Firefox. After Firefox is open again, delete the user.js file.
7. The user.js file enabled userChrome, and added theme settings like tab size, autohiding, etc, in the about:config page.
8. Try it out, go to about:config then search for ultima.