Marriage. Colorado Colorado Supreme Court rules adoptive siblings may marry, RMN Ap 25, 1978 p.31 Current marriage lists for Jefferson, Adams, Arapahoe and Denver counties available from RM Journal. RM rocky mountain Journal Ja 9, 1980 sec.2 p.15 Bill revamping marital property reights approved in House RMN F 28, 1984 p.18 Couple married in plane over Colorado air space. RNJDT N 10, 1984 p.7