List 13 colors in a rainbow.
user
there are seven colors in a rainbow, not 13. 

the order of the colors is red, orange, yellow, green, blue, indigo, and violet. the colors are all arranged in a semi-circle and are caused by the refraction of sunlight in water droplets. 

i hope this helps! let me know if you have any other questions.
assistant
There are seven colors in a rainbow, not 13. 

The order of the colors is red, orange, yellow, green, blue, indigo, and violet. The colors are all arranged in a semi-circle and are caused by the refraction of sunlight in water droplets. 

I hope this helps! Let me know if you have any other questions.
assistant