Excellent work, one feature requested! Rated 5 out of 5 stars

I was about to write some JS code and I decided to see if my idea was done first. It had been, and done very well! Thanks for making this a very usable extension. One request though -- I feel I want to be able to save off a copy of the .CSS file without the unused CSS in it. Thanks for Dust-Me, again!

This review is for a previous version of the add-on (3.01.1-signed.1-signed). 

That feature is coming in the next update.