Colorado Governor John Hickenlooper (D), who opposed Amendment 64, conceded defeat with a caveat: “The voters have spoken and we have to respect their will. This will be a complicated process, but we intend to follow through. That said, federal law still says marijuana is an illegal drug so don’t break out the Cheetos or Goldfish too quickly.”
Still, the elimination of penalties for possessing up to an ounce of marijuana (for persons 21 and older) takes effect as soon as Gov. Hickenlooper signs a proclamation certifying the results of the election—which he is required to do within 30 days
The big takeaway, as Jacob Sullum at Reason points out, is that adults in bothstates don't have to worry nearly as much about being busted for possession because the vast majority of arrests are made by state and local police.