DO NOT USE THIS AFTER UPGRADE 3.6.6 Rated 1 out of 5 stars

This add-on crashed my system and caused me to have to start all over, the whole thing. It of course was a Royal Pain. It worked fine with previous upgrades but when I went to reinstall it for upgrade 3.6.6 and restart Firefox NO Work. So I rebooted system BAD IDEA. Blue screen. Do not use any old add-ons with this upgrade. after you upgrade if you see that your theme is not showing up Delete it NOW not in a little while and do not try to reload it. You will only wish you had everything on a different computer before the upgrade.