Colo. Rev. Stat. § 34-60-112
No temporary restraining order or injunction of any kind against the commission or its agents, employees, or representatives, or the attorney general, shall become effective until the plaintiff shall execute a bond in such amount and upon such conditions as the court may direct, and such bond is approved by the judge of the court and filed with the clerk of the court. The bond shall be made payable to the state of Colorado, and shall be for the use and benefit of all persons who may be injured by the acts done under the protection of the restraining order or injunction, if the rule, regulation, or order is upheld. No suit on the bond may be brought after six months from the date of the final determination of the suit in which the restraining order or injunction was issued.
C.R.S. § 34-60-112