Two places you can start.
Amendment 64: The Regulate Marijuana Like Alcohol Act of 2012 | Yes on Amendment 64: The Colorado Campaign to Regulate Marijuana Like Alcohol

the news for all the bills they are passing in Colorado.
https://www.google.com/search?q=amen...w=1810&bih=880

And dont think you can be a temporary residence. No such thing.
Department of Revenue - Division of Motor Vehicles:New Residents

I think you have a lot of homework before you can. Why not go up to WA? Have you looked at the laws up there?