pg, please re-visit the decision to have the post's text in gray-on-gray. It's awful for long initial posts like this one. No doubt I'm not the only one that selects the text to get it the slightly better yellow-on-black. It makes me less likely to bother reading the text through no fault of the writer.
True. Although are you aware you can select the text of the URL and, in Firefox 3, drag it up to the tab bar and either drop it on an existing tab, e.g. the current one, or drop it slightly to the right of the right-most tab to create a new one. If doing the latter, you should see a downward pointing arrow when you're over the drop zone.
They have a Firefox extension, Stylish, which lets you apply custom user styles to sites, to override the native CSS if it's not to your liking. Just like Greasemonkey for Firefox.
I found it after becoming immensely frustrated with a site that had inexplicably decided to invert the colors for a:link and a:visited.