Aren't blues just recessive gene DB's left over from line breeding? I had some one try and tell me that only a select few DB will have blue off-spring... I was like really, I get stuck with 100's of them... I feed them to my south americans. He kept claiming they were blue because they were from the original "german" strain. I was like they are blue because of Mendel's First Law of Genetics... I assume it's just a trade name, am I wrong?