TBP is so heavily warned against -- though I never had any problems -- and TabMix is listed as the preferred alternative, that I thought I'd give it a try when things went wonky after a Firefox upgrade. I now know that creating a new profile probably would have worked, but it was another extension -- Greasemonkey -- that stopped working. I figured I'd try the tab extension alleged to play better with others. The only thing I'm missing is the colored tab groups.