This is the way I understand the blue color (not self blue as in lavender)
[COLOR=333333]Black x Splash = 100% blue[/COLOR][COLOR=333333]
[/COLOR][COLOR=333333]Black x Blue = 50% black, 50% blue[/COLOR][COLOR=333333]
[/COLOR][COLOR=333333]Blue x Blue = 25% black, 50% Blue, 25% splash[/COLOR][COLOR=333333]
[/COLOR][COLOR=333333]Blue x Splash = 50% Blue, 50% splash[/COLOR][COLOR=333333]
[/COLOR][COLOR=333333]Splash x Splash = 100% splash[/COLOR]
[COLOR=333333]So how would the splash color be a wild card? And what colors do you get when you breed your splash to splash birds?[/COLOR]
Well since blue and splash are not SOP varieties, I wouldn't use them to breed for BCM SOP. That's if you're just starting with the BCMs if you have experience with them go ahead and use them. I know about the above breeding chart but wouldn't the splash and blue have an effect on melanization causing different shades of blues and blacks