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Reset Firefox dark mode source code?

  • 5 replies
  • 0 have this problem
  • 9 views
  • Last reply by zeroknight

Helen Chao
Helen Chao
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I'm not very computer savvy but I followed a website a few months ago to edit Firefox so it'd default to dark mode. I think I went in and edited source code? I can't find the instructions anymore but I'd like to revert back to the original setting. How do I do that? I tried to refresh Firefox but it's still coming back with some websites in dark mode and some not. Please advise!

I'm not very computer savvy but I followed a website a few months ago to edit Firefox so it'd default to dark mode. I think I went in and edited source code? I can't find the instructions anymore but I'd like to revert back to the original setting. How do I do that? I tried to refresh Firefox but it's still coming back with some websites in dark mode and some not. Please advise!

Chosen solution

Helen Chao said
I tried to refresh Firefox but it's still coming back with some websites in dark mode and some not.

If your system theme is dark then this will be picked up by websites, you can avoid this by changing the website appearance setting to "Light".

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All Replies (5)

Terry
Terry
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If you edited the source code, you will have to remove that version from your system completely and reinstall.

Helen Chao
Helen Chao Question owner
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How do I do that?

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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You can create a new profile as a quick test to see if your current profile is causing the problem.

See "Creating a profile":

If the new profile works, you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

Terry
Terry
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These may help.

https://support.mozilla.org/en-US/kb/uninstall-firefox-from-your-computer https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

zeroknight
zeroknight
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Chosen Solution

Helen Chao said
I tried to refresh Firefox but it's still coming back with some websites in dark mode and some not.

If your system theme is dark then this will be picked up by websites, you can avoid this by changing the website appearance setting to "Light".