ESSENTIAL Rated 5 out of 5 stars
This add-on is right up there with Adblock Plus as my first and immediate installs. Too much of the web is blinding, headache inducing, white backgrounds. Thank you so much for this add-on. I've been using it a long time but never rated or reviewed.
Before using this, I manually changed the colors in FF. I even made a macro to do it quicker. This add-on is much more convenient than what I was doing.