[Kalisi]

I have a female chocolate yorkie and she gave birth 2 months ago (3rd litter). She has 4 pups ( 2 blacks, 1 solid gold, 1 chocolate). Sire is teacup yorkie. I know my yorkie has recessive genes and she produced biewer yorkie on her 1st litter. I was just wondering why she has pure black pups with no tint of brown at all. I was looking for article about black yorkie but I always get yorkie and poodle mix articles. Does it mean that my yorkie has poodle bloodline?