Rated 5 out of 5 stars

Great theme, it saved my life when TB switched to the ugly new look. The only thing missing is Lightning support. Maybe in a future version?

This review is for a previous version of the add-on (11.0). 

I see there just cosmetic difference (mostly dependent directly on the OS dialog rendering). The only reason could be buttons, which are colored on WinXP.
I'm sorry for disappointing you - Lightning support is not planned now. Thank you for your comment.