What color are these silkies going to be?

[NorthChicken]

I have 3 silkies that are about a week old now. One is a buff, and the other two are supposed to be blues. But why is there such a difference between the two blues? And they have what looks like lighter or yellow spots, could they possibly be splash? Just curious what color they are going to be as adults
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[Makomd]

The lighter one appears to be a splash.

 

[NorthChicken]

Thanks! That is what I was thinking, but don't know much about colors.