C.R.S. § 15-11-213: Waiver of right to elect and of other rights.

(1) Any affirmation, modification, or waiver of a marital right or obligation, as defined in section 14-2-302, C.R.S., made on or after July 1, 2014, is unenforceable unless the affirmation, modification, or waiver is contained in a premarital or marital agreement, as defined in section 14-2-302, C.R.S., that is enforceable under part 3 of article 2 of title 14, C.R.S.

(2) Any affirmation, modification, or waiver of a marital right or obligation made before July 1, 2014, is governed by the law in effect at the time the affirmation, modification, or waiver was made.