[vidasmile]

If some grey colour could go with the black, maybe then Trintukas (its a name of a hamster. Means "Eraser") has light grey gene not silver grey.
I found such an information about grey alleles:
Light Grey Lglg Buttermilk grey with heavy dark grey ticking
Silver Grey SgSg Soft pastel grey lightly ticked with brownish black
Dark Grey dgdg Pearly grey with heavy black ticking and black eye rings
I am not a native English speaker, so maybe I understand something wrong. But what I found in google "buttermilk color" is much more about his color, than "pastel grey". And he definately has ticking (I thought is umbrous). But maybe it is just Light grey (Lglg)?