Colo. Const. art. XVIII, § 10

Severability of constitutional provisions. If any provision of any section of any article in this constitution is found by a court of competent jurisdiction to be unconstitutional, the remaining provisions are valid unless the court holds that the valid provisions are so essentially and inseparably connected with, and so dependent upon, the void provision that it cannot be presumed the enactment of the valid provisions would have occurred without the void one; or unless the court determines that the valid provisions, standing alone, are incomplete and not capable of being executed.