User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5) Gecko/2008032619 Firefox/3.0b5 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b5) Gecko/2008032619 Firefox/3.0b5 If you visit a site, that has some dark background and some form fields, then you can see the problem. My english grammar is not so well, but here is an image, which describes the problem fully: http://webjegyzet.hu/p/ffwidget.png . I have higlighted the problem with red. Reproducible: Always Steps to Reproduce: 1. Visit any dark backgrounded site 2. Check the "border" of the widgets Actual Results: They has a white bounding box. Expected Results: No visible bounding box, just the normal border of the items. Kubuntu gutsy, KDE, ff3b5.