If you snake is as ivory ( super yellow belly ) then every offspring would be yellowbelly. I think that makes the result;
50% Ivory ( super yellowbelly ) and 50% highway ( yellow belly/gravel ).
I could, however be dead wrong so wait for confirmation.
Right on. I'm going to contact the breeder also. I got him from Wilbanks Reptiles. Just thought I might get a quicker response here. Thanks for your input!