Colorado is a key swing state in the upcoming presidential election. In polls, Colorado looks like a toss-up between Mitt Romney and Barack Obama, with leads shifting back and forth by the day -- and which way the vote ultimately goes could decide the national outcome. By the numbers, though, this state is pure purple: More than a third of our voters are officially unaffiliated, with the rest divided almost equally between the Democratic and Republican parties. How do you know which color of Colorado you live in? You are what -- and where -- you eat! Keep reading for our handy guide.