2 major bugs Rated 4 out of 5 stars
ATTENTION: as ssokolow stated, it changes toolbars, like you're on HTML tab, then after some seconds it changes to inline code finder one! second bug: even if you disable firebug and inline code finder, you still see the lines red-green you see in screenshoot. Wait for an update.This review is for a previous version of the add-on (0.93).
The problems you mentioned have been fixed in the latest release, 0.94. Please download that and all should be fine.