Thats a splash. To breed for splash you need to breed a splash to a blue or a splash or a blue to a blue. Here is how it works.
Black x black = 100% black
Black x blue = 50% blue 50% black
Black x splash = 100% blue
Blue x blue = 25% black 50% blue 25% splash
Blue x splash = 25% blue 75% splash
Splash x splash = 100% splash
As for the paint im not positive how it works out, i believe you should breed a paint to a black to increase the black. Not sure on that one tho.