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The flag of the state of Colorado is a bicolor horizontal triband of blue and white charged with a circular red letter "C" filled with a golden disk. That is, it consists of three horizontal stripes of equal width, the top and bottom stripes blue, and the middle stripe white, on top of which sits a circular red "C", filled with a golden disk. The blue is meant to represent the skies, the gold stands for the abundant sunshine the state enjoys, the white represents the snowcapped mountains, and the red represents the ruddy earth.

Source: Wikipedia