After about 10 days my 4' x 4' x 4' raised coop is almost finished. My husband and I put on the nest box today, it is the Purina style which hangs off the outside. We have a window on the east side of the coop, the nest box is on the opposite wall. I have painted the inside of the coop white. Would it be a good idea to paint the inside of the nest box a dark color to help entice the birds into it? Thanks for any idea or opinions.