These dogs are black tri-color. They are black with white and tan markings.

These dogs are red tri-color. They are red with white and tan markings.

These dogs are all black or red bi-color. They have white, but no tan markings.

These dogs are blue merles. They all have white and tan markings, so technically they are blue merle tri-colored

These dogs are red merles. They all have white and tan markings, so technically they are red merle tri-colored

These dogs are all blue or red merle bi-color. They have white but no tan markings.

Same pups from behind: L to R: blue merle, black tri, red bi and red merle (on the step)

All 4 colors, in one litter, Left to right: black tri, red bi, red merle, blue merle