This will be way off I'm sure, but I'll guess anyway:

They all contain Pastel

1.0 '07 Pastel Calico
0.1 '06 Pastel Lesser
0.1 '06 Pastel Pin (Lemon Blast)


Was I close?

We need more hints than that. Give us a shot where we can see more than a few scales or tell us if the snakes' morphs are a combination of recessive, co-dom, or dom morphs. Please!!