Fireball Ball Pythons are a co-dominant trait.
When bred together, you get, I'm pretty sure, the black eyed luecistic.
Do you understand the minimum of genetics?
Well, like I said, fireball is a co-dominant trait.
If you breed 1 fireball, to 1 normal, you get roughly 50% Fireball hatchlings, and 50% normal hatchlings.
If you breed a fireball to a fireball, you will get I think 25% luecistics, and 75% fireball hatchlings.
And if you breed the dominant form [luecistic] to a normal you will get all fireballs.
If you can understand recessive genetics, this is more explainable.
You can think of the fireballs as a "het". The thing is here though, they are a visual het. When breeding 2 "hets" together, you can get the desired outcome, which is the luecisitic, the homogenous.
And of course, breeding the homogeneous to a normal will give you all "hets".
Sorry if that is a tad confusing. LOL. Keep the questions coming, hope that helped you out a tad.