Blackie.
Blighty.
Snowdrift or Magnolia
Moby.
Andthesevendwarfs.
Tintin’s dog is named Snowy in the English versions.
Albinot.
The S’mores twins!
Snowball was the black private in Full Metal Jacket, the object of some of the sergeant’s unique brand of humour:
In Isabel Allende’s House of the Spirits, there’s a tradition of naming the women in the family some variation on “white;” IIRC, there was a Blanca, an Alba, and a Clara (really “clear,” not white, but close enough.)
Coke.
Years ago (like thirty or thirty-five years ago), my uncle, then a police officer, adopted a police dog due for retirement. The dog was a white (maybe albino, I don’t know) Generman shepherd.
His kids, my cousins, loved that dog. But its name had been, I swear, Cocaine. White dog, white powder, you get it.
Fortunately, it answered to Coke, and the kids were told that the dog was named Coke after the soda. No reason given. No problem.
This guy’s got the right idea. Other good choices are Ebony, Onyx, and Sable.
On rice.
Ivory
Cumulus
Casper
Haoli / Haole
Honky
Glacier
Iceberg