Rare Colors

This is the most common of the "rare" colors. The black should be shiny and look black even when contrasted against black objects or the sun (except Seal colors). May/may not have a fawn undercoat when the hair is rubbed backwards. The nose, eyeliner and pads are true black.

Genotype: [KB] and/or [atat]

A blue is a black bulldog that has been diluted in color. The blue should be shiny and look gray when contrasted against black objects or in the sun (except seal color). May/may not have fawn undercoat when hair is rubbed backwards. In the case of the blue fawn, although the hair is not diluted by the [dd] gene, the pigment in the nose, pads and eyeliner is diluted to slate gray. 

Genotype: [dd]

A chocolate bulldog is a black dog that has been diluted in color. The chocolate should be shiny and look brown when contrasted against black objects or in the sun (except seal color). May/may not have fawn undercoat when hair rubbed backwards. The nose, eyeliner and pads are brown/liver colored. In the case of Chocolate Fawn, although hair is not diluted by the [bb] gene, pigment in nose/eyeliner/pads are diluted to brown/liver. 

Genotype: [bb]

Chocolate is diluted in color twice [bb]; dilutes black to brown, and [dd] dilutes black to blue. The lilac should be shiny and look a similar shade of purple / lilac color when contrasted against black objects or in the sun (except seal colors). May/may not have a fawn undercoat when hair is rubbed backwards. The nose, eyeliner and pads are some shade of purple. In case of Lilac Fawn, although hair is not diluted, eyeliner/notes/pads are diluted to a purple and can vary in shade.

Genotype: [bb dd]