 "Color of Life" was written by Misia, co-composed by Misia and Joi, and produced by Joi.The song was used in commercials for the Toyota WISH, starring football player Hidetoshi Nakata.The B-side, "Taiyō ga Kureta Present," was also written by Misia, co-composed by Misia and Mits Ishibashi, and produced by Ishibashi.