Don't take this sarcastically, but why did you decide to breed him with such a dark female? If he isn't genetic, wouldn't the offspring be likely to look very normal, as in a color in between the parents' color? I would think that if it's not genetic, it would be kind of like breeding a hypomelanistic leopard gecko with a line bred melanistic leo, negating all the work of previous line breeding to get to the color of the parents.
I'm just interested in knowing, because I have a dark female that I was worried about breeding to my pastel or spider. I was thinking of using her in my albino project to try to boost the contrast of the albinos, but I'd like to breed her to a co-dom or dom male. I'm not really into darker colored BPs, except for the super forms of black pastels and such.
What are these mojavas I keep hearing so much about?