Those with purple head are Super Mojave they keep that dirty look throughout their lives.
Those with yellow stripping sometimes have something else in it.
If you are a pure white snake you want a Mojave X Lesser Cross or a Super Lesser (now you need to watch out since many Super Lesser or Super Butter have bug eyes).
I have a Hypo Super Mojave so the head is slightly grey (not as grey as Super Mojave due to the hypo gene) and the body is clean white (super mojave then to yellow out with the years)
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