C.R.S. § 14-15-106: Restrictions as to minors and wards.

(1) A county clerk and recorder shall not issue a civil union license if either party to the intended civil union is:

(a) Under eighteen years of age; or

(b) Eighteen years of age or older and under guardianship, unless the party under guardianship has the written consent of his or her guardian.

(2) A violation of subsection (1) of this section makes the civil union void.