Tanzaku's five colors, which are mentioned in the lyrics of a song "Tanabata-sama," refer to green, red, yellow, white and black based on Gogyo-setsu (the theory of five elements).
「たなばたさま」の楽曲にある五色の短冊の五色は、五行説にあてはめた五色で、緑・紅・黄・白・黒をいう。