20/07/2022 Last Updates

Changed wallpaper on a blank loading screen to a solid dark color for the "userContent-WallpaperEdition".

19/07/2022

Added new theme with background wallpaper and blur effect.

Download userContent-WallpaperEdition.css rename it to userContent.css file, put "wallpaper.jpg" inside image folder. If you are using 'png' image file dont forget to rename to "wallpaper.png" in userContent.css on line 39. There are some minor graphical glitches that happen sometimes hovering on the blur effect because of the firefox implementation.

Updated for PROTON - Firefox-Mod-Blur

Last tested ver. 104.0.1 / Installation guide below / Designed for Windows 10/11 / Last Updates

⚠️ ⚠️ ⚠️ The Blur effect is still disabled for UI elements by firefox. Only works for website content. (19/07/2022) ⚠️ ⚠️ ⚠️

Mac OS style buttons (left side by default)

MacOS Style Buttons: Right 'userChrome-NoBlur-MacOsStyleButtonsRightSide.css' ---- Left 'userChrome-NoBlur-MacOsStyleButtonsLeftSide.css'

Default Operating System Buttons Right 'userChrome-NoBlur-DefaultOSButtonsRightSide.css' ---- Left 'userChrome-NoBlur-DefaultOSButtonsLeftSide.css'

One line config: 'userChrome-ONE-LINER.css' For Firefox versions below 89.0.0

Blurred search bar and bookmarks bar (Still disabled by firefox, use nonBlur or older firefox version)

Last Tested version: 104.0.1 (Proton)

Tested on:
 	-- Default Dark Theme
	NEW PROTON 
		-- Windows 10/11 - 104.0.1 / 102.0.1 / 102.0 / 101.0 / 100.0 / 99.0.1/ 98.0 / 97.0.1 / 96.0.3 / 96.0 / 95.0 / 94.0.1 / 93.0 / 91.0.2 / 90.0.1 / 90.0 / 89.0.1 / 89.0.0

	Old Firefox Versions:
		-- Windows - 73.0.1 / 74.0 / 74.0.1 / 75.0.0 / 77.0.1 / 80.0 /  84.0.1 / 85.0.0
 		-- Linux - 74.0.1 | Default Dark Theme

Installation

Use Dark theme for firefox to avoid any color issues. https://i.imgur.com/yFZbyo7.png

Use "userContent-Windows11_DefaultSizeScrollbar.css" if you have windows 11 because they changed the scrollbar.

Dont forget to rename the chosen template files to 'userChrome.css' and 'userContent.css'

1. Enable toolkit.legacyUserProfileCustomizations.stylesheets in about:config for your custom themes to work.

2. You can find your profile place by going to about:support and using Open folder in Profile folder section.

3. File Structure (Create chrome folder inside your main profile folder if it doesnt exist):

   ... / chrome / userChrome.css

   ... / chrome / userContent.css

   ... / chrome / image /

   ... / chrome / window /

4. For blur style search dropdown and bookmarks bar to work:

   Go to about:config and enable layout.css.backdrop-filter.enabled (change to true).

   Optional: if it still doesnt show up try enabling gfx.webrender.enabled (change to true).

   It could even require updated GPU drivers but that's rarely an issue.

5. I use firefox integrated Flexible space for spacing https://imgur.com/a/Gd82v0H.

---

Source for Backdrop filter: https://www.reddit.com/r/FirefoxCSS/comments/ddi4dc/testing_the_backdropfilter_in_the_url_dropdown/

Source for Windows Control buttons: https://github.com/aminomancer/uc.css.js/tree/master/resources/window

Last Updates

10/06/2022 Fixed padding in fullscreen after recent version changes.

14/05/2022 Fixed after an update broken popup menu background color for 100.x versions of firefox.

13/02/2022 Added new optional file for default size scrollbar. The color stays dark. Works best with new Windows 11 scrollbar.
Use "userContent-Windows11_DefaultSizeScrollbar.css" file and rename it to "userContent.css".