I tried the userCrome.css route however had no success with it. Perhaps I created the Chrome folder in the wrong location or didn’t do something else to point TB to it. I’m open to all suggestions. Thank you.

Thank you very, very, much. My problem was that I didn't have the Chrome folder in the correct location. I couldn't find the Profile folder. After searching a bit, I finally located it, moved my userChrome.css folder into it, and presto - success.