Colo. Rev. Stat. § 24-51-615
Distribution of benefits from each division trust fund shall be made in accordance with section 401 (a)(9) of the federal "Internal Revenue Code of 1986", as amended, including the incidental death benefit requirement in section 401 (a)(9)(G), and the applicable treasury regulations and internal revenue service rulings and other interpretations issued thereunder, including treasury regulations sections 1.401 (a)(9)-2 to 1.401 (a)(9)-9. The provisions of this section shall override any distribution options that are inconsistent with section 401 (a)(9) of the federal "Internal Revenue Code of 1986", as amended, to the extent that those distribution options are not grandfathered under treasury regulations section 1.401 (a)(9)-6.
C.R.S. § 24-51-615