A dark theme for firefox theme created using the awesome Nord color palette.

  • By Eliver L.
  • Last update: Dec 30, 2022
  • Comments: 5

Screenshot of the theme


A dark theme for firefox created using the awesome Nord color palette.


Installation script

git clone https://github.com/EliverLara/firefox-nordic-theme && cd firefox-nordic-theme

Script options

  • -f optional

    • Set custom Firefox folder path, for example ~/.mozilla/icecat/.
    • Default: ~/.mozilla/firefox/
  • -p optional

    • Set custom profile folder name, for example e0j6yb0p.default-nightly
    • Default: *.default (standard default profile)
  • -g optional

    • Auto enable GNOMISH extra features hide-single-tab.css & matching-autocomplete-width.css

Manual installation

  1. Go to about:support in Firefox.

  2. Application Basics > Profile Directory > Open Directory.

  3. Open directory in a terminal.

  4. Create a chrome directory if it doesn't exist.

    mkdir -p chrome
    cd chrome
  5. Clone this repo to a subdirectory:

    git clone https://github.com/EliverLara/firefox-nordic-theme.git
  6. Create single-line user CSS files if non-existent or empty (at least one line is needed for sed):

    [[ -s userChrome.css ]] || echo >> userChrome.css
  7. Import this theme at the beginning of the CSS files (all @imports must come before any existing @namespace declarations):

    sed -i '1s/^/@import "firefox-nordic-theme\/userChrome.css";\n/' userChrome.css
  8. Symlink preferences file:

    ln -s chrome/firefox-nordic-theme/configuration/user.js ../user.js
  9. Restart Firefox.

  10. Be happy with your new nordish Firefox.


  1. Go to your firefox profile folder. (Go to about:support in Firefox > Application Basics > Profile Directory > Open Directory)

  2. Remove the chrome folder.

Enabling optional features

Open chrome/firefox-nordic-theme/userChrome.css with a text editor and follow instructions to enable extra features. Keep in mind this file might change in future versions and your configuration will be lost. You can copy the @imports you want to enable to a new file named customChrome.css directly in your chrome/firefox-nordic-theme directory if you want it to survive updates. Remember all @imports must be at the top of the file, before other statements.

Alternatively you can run installation script with -g flag to auto install GNOMISH features.

./scripts/install.sh -g

Known bugs

CSD have sharp corners

See upstream bug.

Icons color broken with system-icons.css

Icons might appear black where they should be white on some systems. I have no idea why, but you can adjust them directly in the system-icons.css file, look for --gnome-icons-hack-filter & --gnome-window-icons-hack-filter vars and play with css filters.


If you wanna mess around the styles and change something, you might find these things useful.

To use the Inspector to debug the UI, open the developer tools (F12) on any page, go to options, check both of those:

  • Enable browser chrome and add-on debugging toolboxes
  • Enable remote debugging

Now you can close those tools and press Ctrl+Alt+Shift+I to Inspect the browser UI.

Also you can inspect any GTK3 application, for example type this into a terminal and it will run Epiphany with the GTK Inspector, so you can check the CSS styles of its elements too.

GTK_DEBUG=interactive epiphany


Based on the awesome gnome theme by Rafael Mardojai CM




  • 1

    Possible wrong menu bar position

    In firefox, normally the menu bar is directly at the top, above the tab bar. However, your theme changes the tab bar position to below the url bar, which causes the menubar to be moved together with it, as it can be seen here: screenshot--2022-05-06--Fri-03:24:21

    I understand that this can be intentional, but since the menubar is part of my workflow, it feels off having it not in the usual position, how would I be able to change it back - In this case, moving the menubar to above the url bar?

    Thanks for your time and attention, this theme is awesome.

  • 2

    Dropdown menu on a lot of websites are not readable (dark text on dark background)

    With the firefox-nordic-theme on: dropdown

    As shown in this screenshot, the dropdown menu is hardly readable. If I switch off the firefox nordic theme, it becomes normal.

    With the firefox-nordic-theme off: dropdown2

  • 3

    How to remove tab bar for tree style tabs?

    Not really a 'bug' per se. Im running tree style tabs, and would like to remove the top tab bar, while keeping the rest of the nordic theme in place (because i love it). Rather than taking hours of trial and error, hoping you can help me figure out how i can remove the top tab bar all together while keeping the rest of the theme.


  • 4

    'Choose Application' visual bug

    Seems like the choose application never appears to be clickable "visually" but you can still click on it. Might just be a quick fix but I thought I'll get you guys know.

    Confirmed that its not a firefox issue but the theme by uninstalling it and working as normal.


  • 5

    URL suggestions box are not visible in pritvate windows

    Basically whenever I open a private window, the suggestions that get displayed as I type something are not visible as of the screenshots below.

    This happens regardless if I enabled/disabled @import "theme/matching-autocomplete-width.css"

    Here's a normal window: image

    And here's a private window: image