Rated 4 out of 5 stars

Works very well but it needs a lot of improvement.
Note that any of these issues could be because of my personal settings. I've not tested it on a clean browser.

1. A indicator whether it's active or not. "Change the icon color when turned on."

2. An outline of the selected element border.

3. Site based perm removal options. Single page of the site or the entire domain.

4. Hotkey