So why Green on Saint Patrick’s Day?
According to some accounts, blue was the first color associated with St. Patrick’s Day, but that started to change in the 17th century. Green is one of the colors in Ireland’s tri-color flag, and it has been used in the flags of several Irish revolutionary groups throughout history. Ireland is the “Emerald Isle,†so named for its lush green landscape. Green is also the color of spring, the shamrock, and the Chicago River, which the Midwestern city has dyed green on St. Patrick’s Day for the past 40-odd years.
