There are a few of what's known as "Blizzard" Kings out there that are basically pure white as adults, they start out typically very pink as hatchlings. but other than those, there are no solid white Kings.
There are some extremely "high white" Cal. King, which there are some good examples of that have for the most part, an all white body, except for maybe some of the head/neck region which still remains black.
best regards, ~Doug
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"Better to be silent and thought a fool, than to open mouth and remove any doubt!"