A Yuma king looks a little more like a Splendida than a cali king. The king in the series of photos is a cali king. Nice big bands on the body that continue on to the belly. It is a coastal phase cali. Yellow and chocolate coloring.
Here is a link to a picture of a yuma king.
http://www.simplysnakes.com/image27.htm
My black king is a KY locale snake, Hopkins county. She was hatched out from some eggs laid by a W/C gravid female last year.
I like the black kings as well, and am looking to add a speckled king to my collection as well. Either MO or KY locale, whichever I find first.
Yuma king
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1.0 Corn snake
1.0 Black rat snake
1.0 Albino Black rat snake
1.0 Everglades rat snake
0.1 Yellow rat snake
1.1 California king snake
1.0 Prairie king snake
0.1 Black king snake
Good luck and Happy Herping
Brian