I've created a web page with a very basic table and border-style: outset. The attached image shows three colours ("red", "#2CC11F", and "#22A8D6") of this table, and how they appear on Chrome (left) vs Firefox (right). The image is a screen capture, taken with both Firefox and Chrome on the same monitor. I've tried every combination of items listed in the link here: (http://cameratico.com/guides/firefox-color-management/) and restarted Firefox each time, but I simply cannot get it to not display this outset border without looking terrible and washed out. A solid border looks fine, so this has to do with outset borders specifically (and possibly on tables specifically).