What do red, orange, yellow, green, blue and purple verses mean?

Red, orange, yellow, green, blue, blue and purple poems mean that there are seven colors of rainbows hanging in the sky. This poem comes from Mahathir Bodhisattva in modern Mao Zedong. It is red, orange, yellow, green, blue and purple. Whoever practices dancing in the sky with colors means that there are seven-color rainbows hanging in the sky, and whoever dances in the air with them.