Red borders when Displaying Element Info Rated 5 out of 5 stars
I agree with radamazone, VERY useful add-on but now it's hard to identify elements without the red borders when Displaying Element Information (Ctrl+Shift+F). Seems to have been lost in FF v13.This review is for a previous version of the add-on (1.1.9).
Red borders fixed in next version
The red borders are fixed in the next version which is waiting for Mozilla to approve.