My volunteer pumkins are still doing well, but it just dawned on me today that they are white. I hadn't thought much about it, and since I've never grown pumkins before I'm not sure if that is normal. Do they color up once they are mature? The two larger ones are 3/4 of the size of the decorative pumpkins that I thought they were seeds of, but they are still very, very white. Do I maybe have some kind of odd mutation, or do all orange pumkins start out white?