Rated 5 out of 5 stars

I somehow missed the "Private" checkbox in the menu when right-clicking on an open tab, and the dotted underline is a sufficient indicator; It's just that it isn't easy to see against certain colors. You should probably change it to a more prominent color.

This review is for a previous version of the add-on (0.2.1.2).  This user has a previous review of this add-on.