C.R.S. § 24-70-109

(1) All legal notices which are published to advertise sales of real property by a public trustee under a deed of trust or an execution sale resulting from the foreclosure of a mortgage shall contain a statement that the lien foreclosed may not be a first lien, which statement shall be printed in bold-faced type. (2) This section shall apply to all legal notices described in subsection (1) which are published on or after January 1, 1989.