Everyone on Sesame Street is making paintings for their own museum. Rudy wants to paint a rainbow, but he can�t make the perfect purple. This is a problem! Rudy wonders how he can mix the perfect purple. What if he mixes the red and blue paint a little bit at a time? Let�s try! It works. Rudy doesn�t give up and makes the perfect purple for his rainbow, just in time for the museum. Guest: Kasey Musgraves