Colorado: UAGA Statute
12-34-108(a)
Except as otherwise provided in subsection (g) of this section and subject to subsection (f) of this section, in the absence of an express, contrary indication by the donor, a person other than the donor is barred from making, amending, or revoking an anatomical gift of a donor's body or part if the donor made an anatomical gift of the donor's body or part under section 12-34-105 or an amendment to an anatomical gift of the donor's body or part under section 12-34-106.