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black bar on top of screen

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I just did a refresh of Firefox and the top horizontal bar of the screen is now black. How can the original colour be restored?

I just did a refresh of Firefox and the top horizontal bar of the screen is now black. How can the original colour be restored?

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This is done by using the built-in themes in Firefox. You've probably just been changed to the dark mode.

You can also use themes that you download online.

Hope this helps.