C.R.S. § 24-13-106

All persons interested in the sufficiency of the official bond of any of the officers or persons named in section 24-13-105 may appear at the prescribed time and place and shall be allowed to introduce any evidence lawfully tending to prove the removal, death, insolvency, or doubtful solvency of any surety on such official bond, and the officer or person interested, or any of his sureties, may also appear and introduce any evidence lawfully tending to establish the sufficiency of such official bond.