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Why still black background? I picked light for layout.css.prefers-color-scheme.content-override + ui.systemUsesDarkTheme

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  • Last reply by zeroknight

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You can see below my choices for - `1` for light, in `layout.css.prefers-color-scheme.content-override` - `0` for light, in `ui.systemUsesDarkTheme`. - "Light" website appearance AND theme().

But why some websites still darken and blacken background ? Examples are https://superuser.com, https://softwarerecs.stackexchange.com.

This mishap DOESN'T happen in Troubleshoot Mode. But I don't have the Dark Reader extension.

Cross-site Backup

[https://imgur.com/a/QQRu6K7 You can see below] my choices for - [https://support.mozilla.org/en-US/questions/1360536#answer-1465159 `1` for light, in `layout.css.prefers-color-scheme.content-override` ] - [https://support.mozilla.org/en-US/questions/1359881#answer-1465837 `0` for light, in `ui.systemUsesDarkTheme`]. - [https://support.mozilla.org/bm/questions/1366505#answer-1479986 "Light" website appearance AND theme](). '''But why some websites still darken and blacken background ? Examples are https://superuser.com, https://softwarerecs.stackexchange.com.''' This mishap DOESN'T happen in Troubleshoot Mode. But I don't have the [https://addons.mozilla.org/en-US/firefox/addon/darkreader/ Dark Reader extension]. [https://superuser.com/q/1821906 ''Cross-site Backup'']
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zeroknight
zeroknight
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This could be caused by an extension like Dark Reader or userContent.css. Does it still happen in Troubleshoot Mode?

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No, this mishap DOESN'T happen in Troubleshoot Mode. But I don't have Dark Reader, or any similar extension.

Why would my userContent.css cause this mishap? Since installing Firefox, I've never opened — let alone edited — userContent.css. How do I redress this mishap?

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zeroknight
zeroknight
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Disable all your extensions and make sure toolkit.legacyUserProfileCustomizations.stylesheets is default false in about:config then restart the browser.