Below is a collection of photos of disqualified colors in the Boston Terrier breed: CHOCOLATE (LIVER), RED (LIVER), FAWN, CREAM, BLUE, LILAC (ISABELLA), TRI-COLOR, SPLASH, MERLE. Eye color also not allowed or does not meet standard: AMBER, GREEN, HAZEL, BLUE (a disqualification even on a standard Boston). 

 Accompanying most of these colors are traits also not allowed by the standard and are also faults. Noses that are liver or blue or any other color than black do NOT meet standard. The standard has always stated "The nose is black and wide".  Even when some of these colors were allowed in the first few early years, they still could not possibly meet standard with the accompanying pigment. 

Click on the photos for a description. 

Expression

As you see from these photos, the correct Boston terrier expression is difficult to achieve with the ligher pigment.  A Boston's eyes were never meant to be light, the nose was never meant to be pale. 

Be sure to look at the Correct Expressions page to see the expression that can be achieved by following the standard. 

This beautiful expression is of paramount importance to the breed and cannot be neglected in breeding to maintain, much less improve, the over all quality in any Boston Terrier breeding program. 

Edward Axtell - 1910

"The standard adopted by the Boston Terrier Club in 1900 was the result of earnest, sincere, thoughtful deliberations of as conservative and conscientious a body of men as could anywhere be gotten together.

Nothing was done in haste, the utmost consideration was given to every detail, and it was a thoroughly matured, and practically infallible guide to the general character and type of the breed by men who were genuine lovers of the dog for its own sake, who were perfectly familiar with the breed from its start, and who were cognizant of every point and characteristic which differentiated him from the bulldog on the one side and the bull terrier on the other, and while admitting the just claims of every other breed, believed sincerely that the dog evolved under their fostering care was the peer, if not the superior, of all in the particular sphere for which he was designed, an all-round house dog and companion.

In the writer’s estimation this type of dog, for the particular position in life, so to speak, he is to occupy, could not in any way be improved, and the mental qualities that accompany the physical characteristics (which are particularly specified in the first chapter) are of such inestimable value that any possible change would be detrimental."

The Boston Terrier and All About It by Edward Axtell, 1910