well basic breeding(of anything) shows that you breed a normal to an abnormal you are still likely to produce a a few of the desired coloration. I have "wild" peacocks on my property, at one point 5-6 years ago we had one albino male. At this point we have no adult abinos period but every other year or so they still pop up because its in there blood and thats out of 2 normal parents. So if you keep him and breed him to 2 or 3 females you should be able to produce at least a few. I've never breed toads, but they cant be that different from other anphibians.