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

Firefox Troubleshooting
zeroknight replied
StackExchange
StackExchange

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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All Replies (3)

zeroknight
zeroknight

This could be caused by an extension like Dark Reader or userContent.css. Does it still happen in Troubleshoot Mode?

StackExchange
StackExchange Ìbéèrè olóhun

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

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