Almost perfect. Rated 5 out of 5 stars

The only snag I encountered was that the highlighting colors only change the background color, which renders white text (in the case of a light-on-dark user interface) invisible.

Edit: Almost forgot - the Shift-F2 shortcut also collides with the shortcut for Developer Toolbar.

This review is for a previous version of the add-on (0.8.12).