At least in the song, there are red ones, blues ones, green ones and yellow ones, which as a child I always thought was nice and colorful - in the last ten years I've seen all the land on the west side of the Rio Grande from Albuquerque to Bernallilo -that's miles and miles of previously open space- become completely built over with nearly identical single family homes, each and every one of which is roofed and painted with slight variations of a single color - diarrhea brown.