Colo. Rev. Stat. § 15-12-1307
All such proceedings shall be titled substantially in the following form:
IN THE MATTER OF THE DETERMINATION OF HEIRS OR DEVISEES OR BOTH, AND OF INTERESTS IN PROPERTY, OF (Names of
decedents) , Deceased..
Source: L. 93: Entire part R&RE, p. 1244, § 1, effective July 1.