Well, actually if you bred a Het Russo, to a fire (also a het) then each egg would have the possibility of being 1 of 4 forms, each with a 25% chance of happening... Each egg would have a 25% chance of being either a normal, a het Russo, a fire (het black eyed Leucistic) or a combination animal that was both Het Russo and fire.
If you could produce a male and a female that were both het russo and fire combined then you could raise them up and breed them together in a few years and have the possibility of producing up to 9 different forms with different percentages of each possibility. Each egg would have a percentage chance of being one of these forms, they are;
6.25% chance of Normal
12.5 % chance of Het Russo
12.5% chance of fire
25% chance of Het Russo and fire
12.5% chance of Blue Eyed Leucistic het fire
12.5% chance of Black Eyed Leucistic het Russo
6.25% chance of Blue Eyed Leucistic
6.25% chance of Black Eyed Leucistic
6.25% chance of Blue Eyed Leucistic AND Black Eyed Leucistic in one animal (can't even imagine what that would look like)
Sounds like a pretty long project. But potentially rewarding.