Not quite sure what use this is if you're running adblocking already. All I can see is that it changes the font and adds the "bookshelf" picture to all pages. Doesn't really do much else.
Only improvement I could think of would be to slightly colorize the active tab also - a simple mod should do it though... not into that myself unfortunately.
About Goodreads.com Styler and Ad Remover v0.1a1 on Aug 24 2008
About Gmail Redesigned (by Globex Designs) on May 28 2008
About Firefox 3 - Tab Tweaks on May 11 2008
About Combine Stop/Reload buttons on May 11 2008
About _Len R's Well Rounded 3 Dialogs&Textbox fields on May 11 2008
About google-reader-silver.[fl@j] on Apr 20 2008
About Firefox Theme Fix for Windows Vista on Mar 31 2008
About Vista Back & Forward Buttons Variation 2 *Updated* on Mar 31 2008