The bill repealing the switchblade and gravity knife ban passed in the Senate, and has been assigned to the House Judiciary Committee. A hearing date is not yet set. I think this is a good sign, as sending the bill to the "kill" committee, the State, Veterans and Military Affairs Committee, would be a very bad sign.
The Committee has eleven members, Representatives Pete Lee (D), Chair, Joe Salazar (D), Vice Chair; Adrienne Benavidez (D), Terri Carver (R), Mike Foote (D), Leslie Herod (D), Paul Lundeen (R), Jovan Melton (D), Yeulin Willett (R), Mike Weissman (D) and Cole Wist (R). There are seven Democrats and four Republicans. Obviously some Democratic support will be needed to pass the bill. The House sponsor of the bill is a Democrat, so that helps. However if you wanted to contact the members of the committee and let them know you want the bill to pass and encourage them to vote in favor of the bill, that can help. Heck, the Colorado ACLU says they support the bill:
http://aclu-co.org/legislation/sb17-...-switchblades/