The first gay couple granted a civil union in Colorado said their vows before hundreds of people early Wednesday morning at a downtown Denver municipal building, where eager couples and members of the public gathered to celebrate the first legal unions. The new law legalizing civil unions took effect at 12:01 a.m. Wednesday and both Denver and Boulder began issuing licenses immediately. Fran and Anna Simon were the first to receive a civil union certificate. Wearing the white wedding dresses they wore at their commitment ceremony seven years ago and joined by their five-year-old son Jeremy, Fran and Anna received their license from a clerk at 12:02 a.m., following an expectant countdown to midnight led by other couples. Minutes later they were joined in a ceremony officiated by Denver Mayor Michael Hancock.