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Firefox 89 background color menu bar

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In Firefox 89 the background color of the menu bar has disappereared (it is white now). Please tell me how to change the backgroundcolor of the menu bar.

In Firefox 89 the background color of the menu bar has disappereared (it is white now). Please tell me how to change the backgroundcolor of the menu bar.

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Hi , There's a Firefox theme on the addons site called Photon Colors, which I found helps a lot.

Go to https://addons.mozilla.org/firefox/addon/photon-colors/ and click on Install Theme.