My understanding is that the slayer statute in Colorado does prohibit a killer from profiting from his crimes. Even though CW waived his rights to the insurance money, his parents claimed that:
As CW has no living descendants and no spouse, any disclaimed share of an intestate estate would go to his surviving parents, Ronnie and Cindy Watts, under Colo. Rev. Stat. § 15-11-103.
Sick Money Grab: Parents Of Killer Dad Chris Watts Seek $450K Insurance For Slain Wife, Children
The Rzuceks do have that $6 million judgment against CW, so ironically, they would have automatically received all of the $450K from him if there hadn't been a slayer statute, which generally treats the killer as if he predeceased the victim.
Apparently the families settled out of court and can't discuss the outcome.