What breed (and color) is this??

[LtDanFan]

Now i am thoroughly confused. i hatched out this chick from one of 21 eggs which were either ancona, blue swedish and saxony. It looks nothing like the others and was the only one of its kind even as a duckling. The bill is a pretty grey.slate blue and while most of the body is white, there are specks of light grey which are becoming more apparent as it ages. Bill color has not changed and head does not seem to be darkening.
Any guesses as to breed/color and/or why it looks so different than I expected?
For reference it (hopefully she regardless of breed/color) is 8 weeks old. Hatched on or about 7/19.

 

[Jenbirdee]

So pretty!!! Looks mixed breeds to me but @cheezenkwackers knows more