Problem

Pablo Picasso is making one-color versions of all his paintings. He uses the colors in the following order and then starts over from the beginning: start color red, r, e, d, end color red, start color blue, b, l, u, e, end color blue, start color pink, p, i, n, k, end color pink, start color green, g, r, e, e, n, end color green, and start color purple, p, u, r, p, l, e, end color purple.
What color is Painting 27 ?
The color of Painting 27 is
.