To really understand Curaçao, you have to know a thing or two about the history of the orange. Spanish settlers in the sixteenth century tried to cultivate Valencia oranges on the Caribbean island of Curaçao, and failed. The intense heat and dry climate produced oranges with little to no juice, and thick, oily peels. Not much use for juicing, but great for making a bitter orange liqueur that would eventually become known as Curaçao. Senior & Co. in Curaçao was likely the first to begin adding artificial colors to their line of orange liqueurs.