color help

[Donna Anastasi]

#1 Is there any way to tell the difference between a DTW and a Polar Fox
at three weeks of age?  The father has both gg and ch genes.  I don't
know if the mom has g or ch (she does have Sp).

The pup is all white with black eyes.  She may be getting some gray on
the tip of her tail, but it is hard to tell.

#2 For breeders who have both argente and agente cream pups -- how would
you describe the difference in color?