What color is the powder used to dye the Chicago River green for St. Patrick’s Day?
Nothing says Happy St. Patrick’s Day quite like sporting the Irish green! In the Windy City, they even color the Chicago River green.
But the powder used to give the water its holiday hue isn’t emerald from the get-go; it’s actually orange! As soon as this formula hits the water, it turns into the familiar shamrock shade. This may seem strange, but environmentalists can rest assured knowing the formula has been proven to be eco-friendly. Source: Mental Floss.
Saint Patrick’s Day, or the Feast of Saint Patrick (Irish: Lá Fhéile Pádraig, “the Day of the Festival of Patrick”), is a cultural and religious celebration held on 17 March, the traditional death date of Saint Patrick (c. AD 385–461), the foremost patron saint of Ireland.