This can be a really awesome addon but I had to remove it since instead of prettifying my Firefox 32, it gets annoying looking for the best options. First, the process of restaring firefox just to view the changes, hating it, trying a different combination and restarting again is too irritating. I know in the prev versions, the changes are instantaneous and I don't know why you won't continue that feature. I would however consider coming back and even rewriting a favorable review if you fix this issue since this is really an awesome addon. Adding more options wouldn't hurt too. With that said, kudos to your team.