Settings
To access theme settings:
- Open Firefox
- Type
about:configin the URL Bar - Accept the warning & continue
- Type
ultimaoruser.themeto view the list
FF Ultima applies all of it's customization by filtering through user preferences (example: ultima.vertical) found on the about:config page. And below is a list of every custom preference as well as a brief preview of what it will do.
(click images for bigger resolution)
| Preference | Function | Preview |
|---|---|---|
| Switching Tab Size |
ultima.tabs.width.small ultima.tabs.width.medium ultima.tabs.width.large ultima.tabs.width.huge |
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| ultima.tabs.autohide | Enable/Disable Autohide for tabs ℹ️ ... |
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| ultima.disable.verticaltab.bar | To hide the vertical tab bar ℹ️ Great for only Sidebery setups |
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| ultima.disable.alltabs.button | To hide the all tabs menu button |  |
| ultima.disable.windowcontrols.button | To hide the window controls (- o x) |  |
| ultima.sidebar.autohide | Autohide the Sidebar. Expanding it on hover. |  |
| ultima.sidebar.hidden | When the sidebar has autohiding enabled, it will become completely hidden < 1px ℹ️ When used with xstyle.squared or xstyle.squished you can hover screen corners to trigger sidebar expansion |
🚧 |
| ultima.sidebar.longer | When autohiding the sidebar, the expanded width will be longer (350px) | 🚧 |
| ultima.sideberry.autohide | Autohide only Sideberry ℹ️ The Sidebar will autohide/show only when Sideberry is displayed. Other Sidebar pages like Bookmarks, History, etc, will stay in a fully visible state. |
343008543-c6140b4c-7331-4c15-be0a-41af08037d5d.webm |
| ultima.theme.extensions | Extensions-Panel theme, compact-icons or default list-view |  |
| ultima.xstyle.containertabs | Three optional styles for container tabs, make your pick |
  
|
| ultima.xstyle.squared | Square the theme; No margins, borders, or rounded corners |  |
| ultima.xstyle.squished | Same as above, but preserving the theme's rounded aesthetic.. No margins and borders |
🚧 |
| ultima.xstyle.urlbar | when add-on-themes are in use the url bar default view becomes transparent with no shadow |  |
| ultima.urlbar.suggestions | Toggle URL Bar suggestions on/off | ... |
| ultima.urlbar.centered | Center URL Bar text | ... |
| ultima.urlbar.hidebuttons | Hide URL Bar buttons unless hovered | ... |
| ultima.OS.(etc) | For linux title buttons to render correctly, select your DE | ... |
| ultima.OS.mac | This can be used regardless of OS, to simulate left side titlebar buttons. Mac Users will automatically have correct placement. |  |
| toolkit.tabbox.switchByScrolling | When enabled, you can scroll through the tabs bar to switch up and down between them. ℹ️ Depending on your workflow, you may like this preference. |
... |
| browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled | enable to use firefoxs custom new tab backgrounds setting | 🚧 |
| ... | ... |