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What's the about:config setting to disable Website Appearance?

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I'm running the latest Firefox v133 and I use a dark theme for my browser, but I want to keep all the websites displaying in a light theme. However if I choose Light Theme in General>Language and Appearance>Website Appearance, it will make my new tag page light as well, but for my theme I want to keep that page dark as well. I just want to know what the about:config setting is that I can have Firefox disable this check so that it always keeps the websites using Light Theme by default. Would appreciate any help, thank you.

I'm running the latest Firefox v133 and I use a dark theme for my browser, but I want to keep all the websites displaying in a light theme. However if I choose Light Theme in General>Language and Appearance>Website Appearance, it will make my new tag page light as well, but for my theme I want to keep that page dark as well. I just want to know what the about:config setting is that I can have Firefox disable this check so that it always keeps the websites using Light Theme by default. Would appreciate any help, thank you.
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