Colorado Revised Statutes Title 29. Government Local § 29-11.8-111. Unlawful acts

(a) To operate an escort bureau without holding a currently valid local license;

(b) To work as an escort or escort bureau runner without a currently valid local license;

(c) To work as an escort or escort bureau runner without obtaining and carrying a valid identity card pursuant to section 29-11.8-106(4);

(d) To allow the provision or procurement of any escort service to or for any person under the age of eighteen years without the written consent of such person's parent or legal guardian;

(e) To permit any person under the age of eighteen years to be employed as an employee in an escort bureau. If any person who, in fact, is not eighteen years of age exhibits a fraudulent proof of age, reasonable reliance on the fraudulent proof of age may constitute an affirmative defense to any action seeking the revocation or suspension of any license issued under this article 11.8 or to any criminal action arising because a person is not at least eighteen years of age.