There is nothing odd about your sentence.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
chenyinchengA rainbow is red, orange, yellow, green, blue, indigo and violet.This is fine. All of the following are also fine.
My shirt is white and blue.
Jane's car is red and black.
The American flag is red, white, and blue.
CJ