They could very well be Snowy, but they also obviously carry Blue dilution, so they are probably Blue Snowy. That would be my guess based also on the slight hooding of the hen and the extended laced claret of the drake. They had to have come from one parent that carried Blue and also light phase and/or harlequin phase, most likely would be a Butterscotch or a mixed color (in addition to the Snowy parent). They also though did have to have a parent that carried dusky, hence probably Snowy. There are only so many mixes of color they could be since light phase or harlequin phase don't show up in the first generation unless both parents carry the gene. That would eliminate several potential candidates as parents.
My guess would be that they are Blue Snowy, probably from a Snowy x Butterscotch cross or something very similar.