User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a5pre) Gecko/20100511 Minefield/3.7a5pre Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.3a5pre) Gecko/20100511 Minefield/3.7a5pre On this site "http://www.whitehouse.gov/administration/eop/ceq/initiatives/adaptation/submit" and others have buttons that do NOT appear when I'm using my own colors. Reproducible: Always Steps to Reproduce: 1.Edit -> Preferences -> colors -> "use my own colors" 2.buttons disappear completely 3.remove "use my own colors" setting and they again appear Actual Results: I would like to see something where the button should be but with "my own colors" set, "things" disappear. Expected Results: I would like to see something where the button should be.