Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

Mozilla サポートの検索

サポート詐欺に注意してください。 私たちはあなたに通話やショートメッセージの送信、個人情報の共有を求めることはありません。疑わしい行為を見つけたら「迷惑行為を報告」からご報告ください。

詳しく学ぶ

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

Stop dark themes from inverting highlighted text colors

  • 4 件の返信
  • 2 人がこの問題に困っています
  • 75 回表示
  • 最後の返信者: ismurfyou2

more options

Default highlighted text is white on a blue background, but dark themes on Youtube, Twitter, etc seem to be inverting that to blue text on a white background in Firefox.

I'm not sure if I missed a setting somewhere, I've tried manually setting background and foreground colors for selected text, but it's still being inverted.

Default highlighted text is white on a blue background, but dark themes on Youtube, Twitter, etc seem to be inverting that to blue text on a white background in Firefox. I'm not sure if I missed a setting somewhere, I've tried manually setting background and foreground colors for selected text, but it's still being inverted.

すべての返信 (4)

more options

That is the result of a feature to ensure proper contrast. When the calculated contrast isn't enough then text and background colors are swapped. This is likely to happen when you use a dark theme.

  • Bug 255941 - Highlight colour / color does not contrast with document text or background

(please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html
)

more options

Is there a way to disable that feature?

more options

選ばれた解決策

more options

Alright, thanks for the help.

It looks to me like you'd have to do something like modify the value of mSufficientContrast to something low enough to ensure backLuminosityDifference is always greater. But I wouldn't know how to go about that or if its even possible to do so.