Well actually I think I already know about the split over black but does anyone know how the genetic colors end up if crossed with a Blue or a Splash hen??
Lavender will NEVER show in a heterozygous state; it is not a leaky gene. A bird can be lavender AND blue (Blbl lavlav) or lavender AND splash (BlBl lavlav). The phenotype is pretty much blue or splash--not much to tell that the lavender is present. There is a way to tell from the colouring of the shafts of the tail feathers, but the website that gave details on that disappeared at the end of December
Actually, if it is lavlav, all the babies will carry lav. If you breed a Blbl lavlav to a blbl lavlav, all the babies will be lavender; however, those who also inherit a blue gene will show as blue.