I was wondering, what would happen to the creme legbar if I bred to the white leghorn?
I could be wrong about this and someone correct me if I am, but wouldn't the Dominant White be very difficult to breed out in the future? Are you trying to improve egg production or what is the reason for crossing to the leghorn?
If you are just looking for a high volume blue egg layer, then that's kind of what the Arkansas Blue was created to be. The problem with the ABs is that they are hard to find right now and the eggs don't seem to ship and hatch.
I recall, I believe on a silky thread, reading to view white as 'white out'.