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Custom Theme Is Suddenly In Dark Mode And I Can't Fix It

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Hi. I made my own custom theme a few weeks ago, and I liked it. It has a dark toolbar, but the automatic new tab was still light. I liked it this way. I updated the browser today, and now it's essentially in dark mode and I can't find how to change it back. I really hate white text on a black background, and as I did not choose that as part of my custom theme, I would really appreciate being given the choice to change it back.

Hi. I made my own custom theme a few weeks ago, and I liked it. It has a dark toolbar, but the automatic new tab was still light. I liked it this way. I updated the browser today, and now it's essentially in dark mode and I can't find how to change it back. I really hate white text on a black background, and as I did not choose that as part of my custom theme, I would really appreciate being given the choice to change it back.

Réiteach roghnaithe

https://support.mozilla.org/en-US/questions/1360640

Apparently the problem is that I have Windows 10 in dark mode. HOWEVER, I have light mode selected for apps, which apparently firefox doesn't count as anymore?

Anyway, I only have windows on dark mode so I can have a color on my windows theme because Windows 10 is horrible like that.

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Réiteach Roghnaithe

https://support.mozilla.org/en-US/questions/1360640

Apparently the problem is that I have Windows 10 in dark mode. HOWEVER, I have light mode selected for apps, which apparently firefox doesn't count as anymore?

Anyway, I only have windows on dark mode so I can have a color on my windows theme because Windows 10 is horrible like that.

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You can change this pref on the about:config page from 3 to 2 to revert to the Firefox 94 behavior.

  • layout.css.prefers-color-scheme.content-override
    Dark (0), light (1), system (2) or browser (3)

You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.

See also this pref:

  • ui.systemUsesDarkTheme [0:light; 1:dark; 2:no-preference]