thanx Rated 5 out of 5 stars

Thank you so much for the reply, i tried for the sittings but it was always colored like a cartoon, i wanted just to change the white background to gray, anyway thanks and keep going ;)

This review is for a previous version of the add-on (5.1). 

Thank you for your review. I will consider adding a second row of simpler themes that merely darken or invert a subset of page colors. UPDATE: Your wish has been granted.

older versions Rated 3 out of 5 stars

Hi, thanks for your hard work, can you please give me the link for the older versions! i can't have my old settings with the new one (5.1), thanks again.

This review is for a previous version of the add-on (5.1). 

You can have your old settings with the new version, but you may have to experiment a bit. I will add some examples in one of the screen shots. Also, the new version contains more improvements than just a new user interface. Of course the older versions remain available as well. Click ' Version information 'at the bottom of the add-on page, then click 'See complete version history', find version 4.0 and click 'Add to Firefox'.