Ok, but what about the military? How is that gonna go. If it's just like alcohol how can they say you aren't allowed to do it. And even so if you test positive you could just say you were in Colorado so it's legal?
Last time I checked the Military is ran by the Feds. So yes they could hold you to a standard that says you can not use MJ even if it is legal and fire you for it's use without a second thought.
Get over it, it is now legal in two states. The what if's will be answered by the courts if necessary. Nothing is going to change the State law. If you are concerned about it, don't use it. Last I checked this amendment gives you the choice to use Marijuana without fear of being a criminal. Whether you choose to exercise that right is up to you.