Colo. Rev. Stat. § 10-3-232
For the purposes of section 10-3-216, the existence of any lien existing by law, for the payment of any bonds, indebtedness, or assessments of, or created by a levy of, any special improvement district, any tunnel district, any conservation district, any irrigation district, any other district or territory, any municipality or quasi-municipality, or any state in which any real estate is situated, or by the United States, shall not prevent mortgages, trust deeds, or other encumbrances upon such real estate, if otherwise first liens, from being admitted assets of domestic insurance companies, if the property securing such mortgage, deed of trust, or other encumbrance is not delinquent in the payment of any installment or interest upon any such bonds, indebtedness, or assessments at the time such real estate loan is made.
C.R.S. § 10-3-232