Oh, yes, yes, yes. PLEASE update your wonderful ColorfulTabs! I am in the same bind by updating Firefox 🙁 I wonder if I can go back to an older version? I NEED my ColorfulTabs back! I even donated way back...that's how much I appreciate your add-on.
While I'm at it, I might as well ask for the one thing I do miss from older versions...being able to color the "active" tab a color of my choice. Would love to have that option back. Thank you!