Rated 3 out of 5 stars

I like it :) It's really nice looking. My only problem with it is that personas don't work with it. Can you get that for it in future updates?

This review is for a previous version of the add-on (15.0.21.08.12). 

I don't think that's possible. Don't give the theme a bad rating about personas. Mozilla is the one you should contact and see if they can make custom themes and personas usable at the same time.