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Black background pages nuisance

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As many here have said, the latest Firefox update has reversed many web pages and menus from white-with-black text to black-with-white text. I can't believe that Mozilla really meant to do this. This is very annoying. It would be one thing to offer it as an option, but to just jam it to us without warning is plain obnoxious. I did do the about:config color-scheme override but that only fixed my Firefox search page. Everything else is still black. Thanks a lot.

Все ответы (2)

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To make sure, you have set the config layout.css.prefers-color-scheme.content-override?

If you haven't, the settings are as follows: 0 - Only use Dark mode 1 - Only use Light mode 2 - Use system theme 3 - Use set Firefox theme

If you have, make sure that you are using the correct option, and that your theme is correct.


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Hi Rob, you probably saw in some other threads that Firefox 96 is choosing the browser's light/dark theme based on your toolbar theme. When the text color on your background tabs (on the tab bar) is light/white, it triggers Firefox to use a dark background on menus, the sidebar, the Library window, and various built-in pages. Firefox also signals sites that you have a dark theme preference.

I realize that many users consider their toolbar theme purely decorative and don't want Firefox to use it to drive colors in other parts of the browser. We are hoping that in a future update there's a checkbox for this on the Settings page, but that isn't useful for you right now.

(1) For people willing to change their toolbar theme

The fastest workaround for now is to change your theme to one that uses dark text. By dark text I mean, for example, the built-in Light theme, or an add-on theme with black or dark text on the tabs. That doesn't need to be blinding, it can have a pastel color. As examples:

I have attached a screenshot illustrating the difference between a theme with light text on the tabs and dark text on the tabs.

(2) For people who can't part with their toolbar theme

This is only a partial workaround for the built-in pages, and for websites that have light/dark responsive themes. (This is the middle panel of the attached screenshot.)

Currently, the only way to decouple your page (content) theme preference from your toolbar theme is through the back door:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

More info on about:config: Configuration Editor for Firefox. The moderators would like us to remind you that changes made through this back door aren't fully supported and aren't guaranteed to continue working in the future.

(2) In the search box in the page, type or paste layout.css.prefers-color-scheme.content-override and pause while the list is filtered

(3) Double-click the preference to display an editing field, and change the value to whatever you prefer from the list below, then press Enter or click the blue check mark button to save the change.

  • 0 => Force a Dark background
  • 1 => Force a Light background
  • 2 => Follow the System theme (default in Firefox 94)
  • 3 => Follow the Browser toolbar theme (default in Firefox 95+)

The about:config page should immediately reflect your saved change.

What about other aspects of the UI?

For the sidebar, menus, and toolbar drop-down panels, there is an unofficial, community-supported option, which is to override the built-in styles using your own style rules in a userChrome.css file. I think people are still pondering how to do that efficiently, and perhaps you aren't that into hacking your browser anyway.


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