Very useful extension. Rated 3 out of 5 stars

For some reason the Options dialog pops open whenever I type '@', this is really annoying.

There should also be an option to hide the urlbar icon for sites which don't have associated rules. I achieved this by putting .opticon{ display: none; } into userChrome.css which is a bit awkward.

This review is for a previous version of the add-on (1.3.27).