Officials from Colorado, one of the Big 12 schools that could be part of a Pac-10 expansion, met Tuesday night in a special session.But following the regents meeting in Denver, Colorado spokesman Ken McConnellogue told the Denver Post that the school had not yet received a Pac-10 invitation."No, we didn't," he said.Colorado and Baylor are vying to be the final school if the Pac-10 takes six current Big 12 members, sources familiar with the process have said.