Colo. Rev. Stat. § 38-43-103
The complaint shall describe the property sought to be leased with reasonable certainty and, insofar as it is known to the plaintiff or as can be ascertained with reasonable diligence, shall set forth the names of all persons interested in such property together with their respective estates or interests, either vested, contingent, or executory; whether said land is proven or unproven as to its oil, gas, or other mineral content; its distance from producing or drilling wells or producing mines; and the reasons why it is necessary, desirable, or beneficial that the property be leased for the production of minerals, including oil, gas, and other natural resources, or any of them. If a bona fide offer to lease has been obtained, the complaint shall also set forth the name of the proposed lessee, the true consideration for said lease, and a general statement as to the provisions of said proposed lease, or a copy of the proposed form of such lease setting forth the terms and conditions thereof may be attached to the complaint.
C.R.S. § 38-43-103