As the last Thanksgiving leftover is consumed and the calendar flips to December， the unmistakable red-and-green flood of the Christmas season comes into view. The two colors fill malls and living rooms around the world， and adorn nearly every decoration， strand of lights， and ugly sweaters on store shelves. The Christmas season is inextricably connected to this color combination—but why？
While there may be no definitive consensus on how this color scheme came to be， there are a few interesting candidates for the official answer.
PARADISE PLAY TREE
Probably the most obscure of the hypotheses suggests red and green may go back to Paradise Play， which was a traditional play performed on Christmas Eve about the Fall of Man and Adam and Eves banishment from the Garden of Eden. The story cant be recreated without a tree， and since it was winter， any good-looking tree was probably an evergreen. You also need a fruit to hang from it—a red apple or a pomegranate.
Its widely thought that as the Paradise Play died out， the tree remained—and turned into the modern Christmas tree. The red of the fruit and the green of the tree linked the two colors in popular imagination with the Christmas season.
Religious Studies professor Bruce David Forbes theorizes that medieval Europeans were looking for something to do during the bleakness of winter. So， why not party？
And that party “would feature evergreens， as signs of life when everything else seems to have died， plus other plants that not only stay green but even bear fruit in the middle of winter， like holly or mistletoe.” （Although mistletoe berries are actually white.） These bright reds and greens in the middle of winter may have made them natural candidates for the colors of Christmas.
In 2011， Cambridge Universitys Spike Bucklow commented， “We recognize holly as being a quintessentially Christmas plant. That red and green is in our psyche because of the Victorians， but it was in their psyche because of the medieval paint that we can still see on 15th-and 16th-century rood screens.”
Rood screens were an integral part of Western churches up until around the time of the Reformation. Their purpose was to separate the nave （where the congregation sits） from the chancel （around the altar， where the clergy would be） and they were intricately designed with local saints， donors， or other figures.
According to Bucklow， popular combinations of colors were red/green and blue/gold， with one pair of colors being watery （blue or green） and one fiery （gold or red）. Bucklow suggests that these colors were part of a representative barrier—separating the more earthly parishioners from the more spiritual altar and sanctuary.
By the time of the Reformation in England， rood screens had largely fallen out of use. In the years afterward， they would be vandalized or ignored as they decayed. Centuries later， according to Bucklow， the Victorians began restoring these rood screens and noticed the red/green color combination. Its possible that they adapted this red and green color scheme for a different boundary： when one year ended and the next began.
adorn /?'d??n/ v. 装饰;装扮
The walls were adorned with paintings.
psyche /'sa?ki/ n. 心灵;精神;心态
She knew， at some deep level of her psyche， that what she was doing was wrong.
decay /d?'ke?/ v. & n. 腐烂，腐朽
The smell of death and decay hung over the town.