The common law marriage, entered into on or subsequent to September 1, 2006 is not a valid marriage in the State of Colorado UNLESS.
Look at the code section from the Colorado Statutes.
14-2-109.5...
Yes, Colorado "recognizes" common law marriage.
To clear up a common misconception, a marriage between an unmarried competent man and an unmarried competent woman (either ceremonial or common law)...
"Currently, only 9 states (Alabama, Colorado, Kansas, Rhode Island, South Carolina, Iowa, Montana, Oklahoma, and Texas) and the District of Columbia recognize common-law marriages contracted within...