The previous version was ok Rated 5 out of 5 stars

After installing Firefox 7.0.1 I just had to reinstall the app from the file downloaded to my pc and ColorfulTabs became 100% fine again. Keep the downloaded file and if the app fails again after installing new Firefox versions just reinstall it from the downloaded file and you'll get ColorfulTabs back on line.

This review is for a previous version of the add-on (6.0.1-signed).  This user has a previous review of this add-on.