C.R.S. § 42-4-607

(1) Intentionally left blank —Ed. (a) No person shall, without lawful authority, attempt to or in fact alter, deface, injure, knock down, remove, or interfere with the effective operation of any official traffic control device or any railroad sign or signal or any inscription, shield, or insignia thereon or any other part thereof. Except as otherwise provided in subsection (2) of this section, any person who violates any provision of this paragraph (a) commits a class B traffic infraction. (b) No person shall possess or sell, without lawful authority, an electronic device that is designed to cause a traffic light to change. A person who violates any provision of this paragraph (b) commits a class B traffic infraction. (2) Intentionally left blank —Ed. (a) No person shall use an electronic device, without lawful authority, that causes a traffic light to change. Except as otherwise provided in paragraph (b) of this subsection (2), a person who violates any provision of this paragraph (a) commits a class A traffic infraction. (b) A person who violates any provision of paragraph (a) of this subsection (2) and thereby proximately causes bodily injury to another person commits a class 1 misdemeanor traffic offense. In addition to any other penalty imposed by law, the court shall impose a fine of one thousand dollars.