Rated 4 out of 5 stars

See 'previous review' at the bottom of this review for reference
1) Thanks! Hope it will be implemented soon.
2) For anyone who needs an simple explanation how to 'fix' the private tab favicon: see below.
3) Please make private tabs persistent.


- Adding the 'Purple Mask Icon' to all private tabs:
Open the folder containing your Firefox-profile: %APPDATA%\Mozilla\Firefox\Profiles\
Open your profile folder (The one with 'default' in its name).
Open (create if it is not there) the folder 'chrome'
Open/create file named 'userChrome.css' in notepad.
Add the code you see here: https://github.com/Infocatcher/UserStyles/blob/master/Private_Tab_icon/privateTabIcon.css
Save the file.
Restart Firefox.
Done.

This review is for a previous version of the add-on (0.1.6.1-signed).  This user has a previous review of this add-on.