" For the ancients green was, like red, one of the middle colors between white and black, and in fact red and green were often confused linguistically: the medieval Latin sinople could refer to either until the fifteenth century.6 In 1195 the future Pope Innocent III reinterpreted green’s role in the divine order in an influential treatise. It must, he wrote, “be chosen for holidays and the days when neither white nor red nor black are suitable, because it is a middle color between white, red, and black.”7 This, theoretically, gave it far greater prominence in the West, but materially it was still rare: it never appeared in more than 5 percent of heraldic arms. One "

― , The Secret Lives of Color