Colo. Rev. Stat. § 2-2-310
The speaker of the house of representatives and the president of the senate shall have copies of each of the journals of their respective houses published as soon as practicable after the adjournment of each session of the general assembly. The journals covering regular sessions and special sessions may be combined in a single volume for this purpose. The chief clerk of the house of representatives and the secretary of the senate shall, as soon as possible after adjournment of any session of the general assembly, deliver to the state archives the original journals of their respective houses. They shall also deliver to the printer a complete and accurate copy of the same, indexed and ready for printing, and also a brief index of all bills, resolutions, and memorials introduced in each of their respective houses during the session. The speaker of the house of representatives and the president of the senate shall certify the correctness of the published copies of said journals, which certificates shall be included in and made a part of such publications. Said journals, when printed and certified, together with all former printed volumes of house and senate journals of preceding sessions of general assemblies of the state of Colorado, published by authority of the state of Colorado, shall be taken and held as prima facie evidence of the originals thereof.
C.R.S. § 2-2-310
For bills being presented to the governor, see § 11 of art. IV, Colo. Const.; for reading and passage of bills, see § 22 of art. V, Colo. Const.; for the general provisions relating to and specifications for printing journals, see §§ 24-70-201 to 24-70-222.