Rated 2 out of 5 stars
This addon is awesome. But I don't know how many times it drove me up a wall - because the very moment you enter a password field, the "hidden chrome stuff" is displayed. The moment you leave it, it vanishes.
Now try to click and edit a password field ... it will play catch-me-if-you-can with you. Please, please fix this.
Otherwise: AWESOME addon. Should be standard Firefox.