the colors can be vastly different.
Im from MO and all I knew was jet black rat snakes, until I moved here to KY, and found out just how variable they are!!
Here is a pic of my KY black rat...

And a pic of my male MO locale black rat..

and that is why I love the rat snakes!!
Brian
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RATS
1.0 Corn snake "Warpath" (KY locale)
1.0 Black rat snake "Havok" (KY locale)
1.1 Black rat snakes "Reaper and Mystique" (MO locale)
1.0 Albino Black rat snake "Malakai" (Dwight Good stock)
1.0 Everglades rat snake "Deadpool" (Dwight Good stock)
0.1 Greenish rat snake "Rogue" (Dwight Good stock)
1.0 Yellow rat snake "Wolverine" (Dwight Good stock)
1.0 Grey rat snake "Punisher" (White oak phase)(Dwight Good stock)
RACERS
1.0 Eastern Yellow Belly racer "Nightcrawler" (MO locale)
KINGS
1.1 California king snake "Bandit and Moonstar" (Coastal phase)
1.0 Prairie king snake "Bishop" (KY locale)
0.1 Black king snake "Domino" (KY locale)
1.0 Desert Kingsnake "Gambit"
0.1 Florida Kingsnake "Shard"
MILKS
0.0.1 Eastern Milk snake "Cable" (KY locale)
0.0.1 Eastern/Red milk intergrade "Omega Red" (KY locale)
BULLS/GOPHERS/PINES
0.1 Sonoran Gopher "Husk"
Good luck and Happy Herping
Brian