C.R.S. § 15-18-106

(1) Except as otherwise provided in section 15-18-105 , a declaration must be: (a) Signed by the declarant in the presence of two witnesses; or (b) Signed by the declarant and acknowledged before a notary public or other individual authorized by law to take acknowledgments, unless a court determines that this subsection (1)(b) should not apply to the declaration in the interest of justice. (2) For the purposes of this section, a person specified in section 15-18-105 shall not be a witness, notary public, or other individual authorized by law to take acknowledgments.