This style was obsoleted and the code was removed. There is nothing to do with CSS of "a, b, c, d { }" since there is nothing between the brackets. Maybe look at Yellow https location bar instead.
Very nice! Using Greasemonkey (which is to JavaScript what Stylish is to CSS), I did a similar hack, making Scroogle look more like Google, and adding several Google-styled features (cache links, translations, similar pages). Since this style doesn't need to loop anywhere, it is probably more efficient, so users with extremely old systems are probably better off with your hack rather than mine. Check mine out at http://userscripts.org/scripts/show/23529
I forked this style into "style 4113" to safely render file:// indexes and to implement suggestions from previous comments (typo on telnet, link the whole line). This was forked because I have no way of contacting the developer, and the "ask a question or make a suggestion" link doesn't let me enter enough text for even a diff. If this violates the undisclosed license, I will remove it.
About Urlbar Security background (Nasa Night Launch The) on Dec 31 2008
About Scroogle Googlification! on Oct 10 2008
About FTP pages were awful on Nov 12 2007