Can't Live Without Rated 5 out of 5 stars

I love this add-on. It works great in Firefox 5.0, which I use for everything. I recently had to download FF 3.6 for a job, so now when I go back to 5.0, Colorful Tabs is gone and I have to re-download it. If anyone has the solution to how I can keep Colorful Tabs working in both FF 3.6 and 5.0, I'd appreciate the help. Thanks!

This review is for a previous version of the add-on (4.8.1.6.2.2).