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Enable the menu bar and disable tags on top. Then install a plain persona like this one: https://addons.mozilla.org/en-US/firefox/addon/white-glossy-look/ https

Enable the menu bar and disable tags on top. Then install a plain persona like this one: https://addons.mozilla.org/en-US/firefox/addon/white-glossy-look/ https://addons.mozilla.org/en-US/firefox/addon/white-glossy-... It's not exactly like 3.5, but it's not transparent anymore.

codecaine 15y ago
I did that and installed a couple of extensions that add old functionality and Firefox now crashes pretty much randomly