Simple to use and focused on specific function. (bug develops on FF 19.0.2) Rated 3 out of 5 stars
Would give 4 stars if not for bug.
Worked perfectly in FF 19.0.2 for a little while, but then it stopped allowing me to toggle the text colour back to its intended colour for some websites. I really couldn't think of anything else that would be causing this to happen apart from this add-on.
I tried disabling then uninstalling the add-on but the problem persists. I think the only thing I can do now is re-install FF and all the add-ons with it.
Apart from this current bug, it's simple and easy to use. Other add-ons of this type give too many options. All I wanted was a button I could click on to make all the background elements on a webpage black.
It would be perfect for me if it only affected individual tabs.
Keep up the good work. Keep it simple, keep it focused on a specific function and just make sure it works and is compatible.