Hello Greg .... I'm not from Colorado

.... but I've seen a bunch of Colorado bluegrass bands. Just a thought ... why not contact the Colorado Bluegrass Association
http://www.coloradobluegrass.org/ and see if they can help. There's a contact e-mail for the Association on the website and lots of band websites also that I imagine you could contact to get the word out. I know there's some real friendly folks there and someone is bound to be helpful in your quest

Good Luck.
P.S. You might try asking this same question over at Bluegrass Bass Place website
http://www.bluegrassbassplace.com/phpBB/index.php . I know there are a couple of Colorado players that are members of the website. If you are a member there, you could Private Message them. Look at the member list there and you'll see members #158 and #163 are from Colorado. In particular, you might try Kenny Pabst of High Plains Tradition Band at
http://www.highplainstradition.com/ . He's a fine bluegrass bass player and he gets around so he might be a good lead. He has e-mail and phone numbers listed on the website.