Arielle Eckstut, co-author of Secret Language of Color, attributes the palette's rise to two things: holly and Coca-Cola. "Holly has played a huge part in this red and green association," Eckstut ...

author of The Secret Language of Color. “There is no definitive history, per se,” she tells TIME. Eckstut’s research found that holly, with its green leaves and red berries, long played a ...