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default colors have somehow changed

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I accidentally pressed a lot of keys on my keyboard and for some reason the default colors of Firefox have changed. I found out that by using Ctrl+Alt+D that I can switch the colors back to normal or to the colors that now appear automatically, but this only works for one tab. If I open a new tab, it shows the weird colors (see images below). I tried looking up specific shortcuts for Firefox considering the shortcut mentioned before (Ctrl+Alt+D) only works on Firefox. But I can't find any shortcut tied to that combination. I'm unsure what to do and how to fix this.

I would appreciate it if someone could tell me how to fix this.

I accidentally pressed a lot of keys on my keyboard and for some reason the default colors of Firefox have changed. I found out that by using Ctrl+Alt+D that I can switch the colors back to normal or to the colors that now appear automatically, but this only works for one tab. If I open a new tab, it shows the weird colors (see images below). I tried looking up specific shortcuts for Firefox considering the shortcut mentioned before (Ctrl+Alt+D) only works on Firefox. But I can't find any shortcut tied to that combination. I'm unsure what to do and how to fix this. I would appreciate it if someone could tell me how to fix this.
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Chosen solution

It sounds like something an extension like Dark Reader would do, its default keyboard shortcut for toggling on/off is Alt+Shift+D. Check your extension keyboard shortcuts and try disabling your extensions.

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Chosen Solution

It sounds like something an extension like Dark Reader would do, its default keyboard shortcut for toggling on/off is Alt+Shift+D. Check your extension keyboard shortcuts and try disabling your extensions.

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thank you for your help! it was exactly what you said. I never even use the extension so i completely forgot it existed hahaha. Thank you for your help!