The Chihuahuas that pranced into the public eye in movies such as "Legally Blonde" and commercials such as Taco Bell ads have made fawn the color most commonly associated with the tiniest dog breed. The little Chihuahua comes in a big range of colors, though, with all accepted by the American Kennel Club. A few of the fur shades are less common than others, including pure white, solid black, lilac and brindle.
One indication of whether you have a cream Chihuahua, which is a more common color, or a more rare white Chihuahua can be ascertained by looking at the dog's nose and eyes. A white Chihuahua has lighter eyes than the usual dark luminous peepers of most colors and a pale nose in shades of pink or beige. A dark nose would indicate color genes that produced the pigmentation, instead of coming from a truly colorless gene pool, according to VetInfo.com. They're uncommon because only two white parents can produce this snowy shade without any other color markings.
Black shows up in most Chihuahuas, at least in the genetic profile if not the fur. This dominant gene is also easier to breed out of Chihuahua lines. Breeders often take advantage of this because a solid black pup has more challenges at dog shows. You most often see black combined with another dash of color such as white or tan. A solid black Chihuahua without a touch of another shade is more difficult to come by.
Despite the purplish name, a lilac or lavender Chihuahua isn't a shade of pastel violet but actually a variation on rich, brown coloring. Chocolate coloring is not rare and can range from a rich mahogany shade to a brown so dark it almost looks black. When chocolate becomes diluted into a soft wash of grayish tone, you have a lavender Chihuahua. Because of the need to have the gene to cause the dilution in one of the parents, lilacs are difficult to produce even from two like-colored dogs.
Perhaps you're looking at pup whose fur is richly accented with black hairs dispersed throughout a coat of sable, or another contrasting shade. One of the more rare colors is the brindle pattern, which presents itself in a variety of striping or streaking. It also can be seen with a contrasting color streaked across a black base. Brindles also can be combined with another color, such as a brown brindle with black striping paired with a white chest and paws. According to the American Kennel Club, brindles can be classified as blue brindled fawn, chocolate brindled fawn or fawn brindled black.