Nice one - solid start. Just wondering why the site that is going private is not removed from the "recent closed tabs" - cos this way it's not that "perfect".

Not a replacement of Private Tab. It's more useful another addon that let me open current page in another browser (I just added Firefox with private command line, replacing completely this addon)

Does what it says. However that doesn't make it very useful. (I'm another "Private Tab" refugee).
Instead of using this addon you can just press Ctrl+Shift+P to get your new private window and basta.
Cheers!

Please recolor the icon to be lighter when using the compact dark theme