junebuggena
Crowing
Now here is the tricky part. Blue/Black/Splash is a completely different gene. It's a dominant diluting gene for black. One copy of the gene produces the Blue color, two copies produces Splash. It's impossible to tell a Splash from a Self-Blue when they are chicks. And if you have both colors in your flock, after a generation or two, you can have birds that are both Self-Blue and Splash. It can get very difficult to sort out which birds have which genes, which is why it's generally advised to avoid mixing the two colors.