This darkens the white border around everything to a duller, easier on the eyes grey, as well as darkening some of the area around the reply and new topic textareas. Additionally, a silver border is added around quote tags.

For additional changes (primarily darkening of the actual textareas to shades of grey with white text, please see my Greasemonkey Userscript here: http://userscripts.org/scripts/show/80214