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 | [40px] -> ultima.tabs.size.xs [165px] -> ultima.tabs.size.s [250px] -> ultima.tabs.size.l |
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| ultima.tabs.autohide | Enable/Disable Autohide for tabs ℹ️ When autohide is off, vertical tabs will default to whichever ultima.tab.size setting you are using |
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| ultima.tabs.vertical.hide | Hide vertical tabs ℹ️ To keep vertical tabs completely hidden |
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| ultima.tabs.vertical.onlyprivate | Hide vertical tabs ℹ️ To keep vertical tabs completely hidden ~ except for in Private Windows |
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| ultima.sidebar.autohide | Autohide the Sidebar. Expanding it on hover. | |
| 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.tabs.closetabsbutton | Enable the close x button for vertical tabs. ℹ️ You can multiselect tabs and press the x button to close them all. It functions just as regular Firefox tabs. ℹ️ You can also middle click tabs to close them. |
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| ultima.theme.extensions | Extensions-Panel theme, compact-icons or default list-view |  |
| ultima.xstyle.containertabs | Three optional styles for container tabs, make your pick |
  
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| ultima.xstyle.squared | Square the theme; No margins, borders, or rounded corners |  |
| 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. |
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| 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. |
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| browser.newtabpage.activity-stream.newtabWallpapers.v2.enabled | This preference is new in firefox. ℹ️ It allows you to use custom wallpapers on the New Tab Page. ℹ️ Enabling this will override FF Ultima's themed wallpapers. |
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