Increases in walking speed dramatically raise calorie burn per mile as well as per minute. Indeed, at about 12:30 per mile, walking hits a point where it burns about the same calories/mile as running. Walk faster than 12:30 and you will burn more calories/mile than running at 10:00 pace.
Like Boston Terriers in general, they have sensitive digesture systems and they can get some health issues, including cataracts, cherry eye, allergies, deafness, and luxating patellas. The Red Boston Terrier is probably the most popular color that is out of the Boston Terrier norm.
The only color that is unacceptable and has always been unacceptable for Boston Terriers is Merle. Today there are those that are trying to preserve the future of the Colored Boston Terrier through selective breeding to traditional show stock then breeding back into colors to set type and increase genetic diversity.