I've had the same problem finding some of these. I found the gold mille fleur leghorns and am breeding those, but still looking for the 55-flowery leghorns. Here is a 'recipe' I found for them that I saved. I don't really understand it all, so would welcome any discussion. I don't have the Legbar so I would be more interested in creating them from Leghorns.
The 55-Flowery Leghorn has the following sex-linked genes
1. Sex-linked Barring (B);
2. Sex-linked Silver (S);
3. Sex-linked Fast-feathering (k+).
Males have 2 of each of these genes because they have 2 Z chromosomes. Females have only 1 dose of each of these genes on a single Z chromosome and 1 w chromosome. The dosage difference of B/B, S/S of the males makes the day-old male chick much lighter than the female which has only one dose of B/-w, S/-w on the wild type (e+/e+) and mottled (mo/mo) baby chick color.
It also has the following autosomal genes:
1. e+/e+ (wild type)[chipmunk stripe] Brown Leghorn Coloring;
2. mo/mo recessive mottling.
