MaterialFox UPDATED is a user CSS theme designed for the Firefox browser, inspired by material design.
The motivation behind creating this theme is my appreciation for material design, and the desire to bring this visually appealing style to the Firefox browser.
MaterialFox UPDATED overriding the default CSS with custom styles, utilizing the CSS !important rule.
To start using MaterialFox UPDATED, follow these steps:
-
Go to the following url address
about:config -
Ensure the following properties are set to
true:toolkit.legacyUserProfileCustomizations.stylesheetssvg.context-properties.content.enabledlayout.css.color-mix.enabled
-
Go to the following url address
about:support -
Find
Profile Folderand clickOpen Folderbutton -
Download
chrome.zipfrom the latest project releases -> here (or for Firefox 119 or below -> here) and extract into your Firefox profile directory -
Restart Firefox to apply changes
As an alternative to manual installation, you can use PowerShell script.
For Windows you can run the following PowerShell command:
PowerShell -ExecutionPolicy Unrestricted -Command "iwr https://raw.githubusercontent.com/edelvarden/material-fox-updated/main/install.ps1 -useb | iex"MaterialFox UPDATED support some about:config customization options.
To set preference:
- Go to
about:config - Create a custom boolean preference, just type the preference name and click the plus button, for example
userChrome.default-theme-colors
To disable preference, search by name and remove the preference:
- Go to
about:config. - Search by name and remove the preference.
| Preference | Description |
|---|---|
userChrome.compact-url-bar |
Make the URL bar more compact by reducing its height. |
userChrome.chrome-refresh-2023 |
Enabling new tab bar design like in Chrome Canary version which named as "Chrome Refresh 2023". |
userChrome.chrome-refresh-colors |
Enabling new color scheme like in Chrome Canary version. |
userChrome.default-theme-colors |
Use the default Firefox colors. This can be useful if you want use with Adaptive Tab Bar Color or native Firefox themes |
userChrome.system-accent-colors |
Use system accent colors |
userChrome.force-enable-animations |
Force enable control animation, because by default respects the user animation disable preference. (Not required if you do not disable animation) |
userChrome.dracula-theme-colors |
 |
userChrome.github-theme-colors |
 |
MaterialFox UPDATED support custom css rules, or additionally, if you want to change some colors, you can override the default values with your own.
Follow this steps:
- Find and rename in the root folder
custom_example.csstocustom.css - Open
custom.cssin a text editor - Find the desired variable
- Add your values, for example, set the accent color to red:
:root,
html,
body {
/* add your css below */
--mf-accent-color: #ea4335 !important;
}- Save the file and restart Firefox to apply changes
Using these custom css files can separate your changes from the source project and you can easily backup your files and don't worry about overwriting your changes if you want to update or reinstall the main files.
| Variable name | Description |
|---|---|
--mf-accent-color |
accent color |
--mf-background-color-0 |
dark tones |
--mf-background-color-50 |
middle tones |
--mf-background-color-100 |
light tones |
--mf-text-primary |
main text color |
--mf-text-secondary |
secondary text color |
--mf-text-on-accent |
text on primary button |
--mf-menu-background-color |
menu background color |
--mf-menu-background-color-hover |
menu items background color on mouse over |
--mf-menu-border-color |
controls border color |
--mf-icon-color-primary |
navigation bar icons color |
--mf-icon-color-secondary |
URL bar icons color |
--mf-content-separator-color |
separator line between browser and content area |
--mf-selection-text-color |
text selection color |
--mf-selection-background-color |
selection background color |
-
Replacing the font with your own, change
"YourFontName"to the name of your font::root, html, body { /* add your css below */ } *, *::before, *::after { font-family: "YourFontName" !important; }
-
Remove the separator line between browser and content:
:root, html, body { /* add your css below */ --mf-content-separator-color: transparent !important; }
- Visual Studio Code (development environment)
- NodeJS (for npm)
- Open Firefox profile directory in terminal.
- Clone this repo with the following command:
git clone https://github.com/edelvarden/material-fox-updated.git chrome
cd chrome
npm install
npx husky install
npm run devProject structure
[Profile Folder]
└── chrome
├── chrome
├── src
│ ├── user-chrome
│ ├── user-content
│ ├── user-chrome.scss
│ └── user-content.scss
├── package-lock.json
├── package.json
├── userChrome.css
└── userContent.css
- Then you can modify the files in the
srcdirectory, all changes will be automatically build in the[Profile Folder]/chrome/chromefolder.
To subsequently start the development mode, just use the following command:
npm run dev| Light | Dark |
|---|---|
 |
 |
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