Good Morning and welcome to YT!!! I can't advise you on the color issue, but wanted to chat about food some. I don't like Science Diet either. If you read the ingredants you'll see there are too many additives and by-products. I strongly recommend you look at the food sticky in the health / diet section (
think that's were it is). I feed Barley (my 2 yo) Evo and Bijou (6 mth old) Wellness. Hope to see pictures of your babies very soon as they sound wonderful.