The black family can have several types of markings and patterns.
A pure black chi is not very common, I do not have any this color. This would be the most dominant gene though.
This is a black puppy with white markings on his legs.
This is a black and tan puppy, this is called pointed.
This is Bouncer, a black, tan, and white tricolor. This is also called irish marked where the chest, legs, neck ring, and blaze are white.
This is Cosette, a black and tan spotted on white, parti color.