I posted my question about wanting a lesbian non-Christian officiant on the "Gay Weddings" board here on the knot community, and rather than receive the scorn I was shown in this forum, a very helpful person suggested that a simple and elegant way to show support for gay marriage on one's wedding day is by wearing white knots.
For anyone who's ever felt conflicted about being able to enjoy a basic human right that so many others are deprived of, check out the "Stories" tab at the top about how to show support on your wedding day in a tasteful manner. "Katie and Keith" are a heterosexual bride and groom who used the white knots in a tasteful way. I especially like how Katie tied a white ribbon around her wrist.
Enjoy!