None of us can "make" a morph like Leucistic. What we can do is propogate the individual genes with selective breeding.
So, the only likely way to get a leucistic BRB is to find one with two leucistic genes (visually leucistic) in the wild as a baby. I'm assuming leucistic would have to be recessive to allow propogation of the gene - if it were dominant than the white snake would have to survive to breeding age to be able to pass on the gene!!
Of course there is another less likely way to "find one" by acquiring an unknown het and eventually breeding it back to another unknown het - like Mike with the hypo's
-----
Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count:
26.49 BRB
20.21 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 

