There is no way to know. White prevents all colours and patterns that are genetically present in the bird from appearing. Every white could be different, and thus give different results. Kind of like mixing a stew and adding a can that has a missing label--you don;t know if you are adding carrots, asparagus, peaches, chili or cherry pie filling!I looked through several breeding pages and couldn't find an answer - my little girl wants to know what kind of chicks she could get if she let some hatch with our blue silkie roo and our white silkie hen????