Hi Phil, No there is no resource like that unfortunately - the styling has been down to the developer. The easiest thing to do is start with the demo CSS which as you can see is very basic, and alter the CSS file gradually (remember to check IE as you go so you know when bugs occur) to get the style you want.
There is a commented version of one of the Superfish CSS files which may help you to understand what each rule does, here: http://users.tpg.com.au/j_birch/plugins/superfish/superfish.commented.css In that (rather messy looking) file I have attempted to separate the styling into two groups - the essential styles that are crucial to Superfish working (but in some cases can be tweaked slightly), and the "skin" styles that are purely presentational which you can alter to your heart's content. Joel Birch.
