I was looking around and saw Saa's site. Very sophisticated. And themes! Excellent. Saa seems to have taken a different approach than I did, calling an ASP page (which I assume checks the referrer, sets a cookie, and reloads the page with the new stylesheet).
I'm really trying to avoid page reloads. I want to try to make everything about this site as fast as possible. After seeing Saa's pages, I'm totally convinced that link colors are essential to the theme integrity.
Anyway, thanks for the inspiration, Saa. I wasn't setting out to emulate your page. We seem to have taken separate roads to the same place.