A rainbow is a beautiful reflection of light of water droplets in the atmosphere. Rainbows are usually caused when sunlight shows after rain. There is always red on the outer part, and violet on the inner part, unless it is a double rainbow, then the order of colors are reversed. The colors in a rainbow are red, orange, yellow, green, blue, indigo, and violet. A reflected rainbow is a rainbow above a body of water. Did you know that there are such things as moonbows? They are rainbows at night that look white in the moonlight. Click on the link to learn more about how rainbows are formed https://www.youtube.com/watch?v=rQukmSPctks.