Egg color question

[StepfordCuckoos]

What determines the color of an egg when the parents are two different breeds? The father of all of our chickens is our Black Andalusian. The mothers are Oliver Eggers, Frost White Legbars, Cream Legbars, and Golden Comets (or ISA browns). What can we possibly expect for the egg color? We aren't ~professional~ hatchers so we don't have much experience with this.

 

[Amer]

AndalusiaxOE= Olive, brown, cream and bluish eggs (I say cream and bluish because while brown is dominant over white, egg color is a polymeric trait and it is unlikely that the eggs will have no brown in the bloom.)
AndalusianxLegbar= blue
AndalusianxGold Comet=Cream

Good luck with hatching!