Colorado Revised Statutes Title 13. Courts and Court Procedure § 13-40-106. Written demand

(1) The demand or notice required by section 13-40-104 or 38-12-1303 shall be made in writing, specifying the grounds of the demandant's right to the possession of the premises, including a specific description of the alleged violation or no-fault eviction grounds, describing the premises, and indicating the date and time when the premises shall be delivered up, and shall be signed by the person claiming such possession, the person's agent, or the person's attorney.

(2) The demand or notice required by section 13-40-104 or 38-12-1303 must also include a statement that a residential tenant who receives supplemental security income, social security disability insurance under Title II of the federal “Social Security Act”, 42 U.S.C. sec. 401 et seq., as amended, or cash assistance through the Colorado works program created in part 7 of article 2 of title 26 has a right to mediation prior to the landlord filing an eviction complaint with the court pursuant to section 13-40-110.

(3) The demand or notice required by section 13-40-104 or 38-12-1303 must be written in English, Spanish, or any other language that the landlord knows, or has reason to know, is the primary language of the tenant.