"Prove it to me." OK!
😀
First off (and some of you probably already figured this out from my username), my breed is the Bracco Italiano. It is bred to be a versatile sporting breed that hunts at a trot, and originated in Italy around 500BC. To address color and markings, yes those are often aesthetic, and very tied to tradition with the Bracco. The nobility that bred the dogs over the years wanted balance and beauty to be key with these dogs, as well as functionality. Although we are very picky about color (not markings), because in the late 1800s, people crossed them with hounds... which produces not only different colors, but also a different temperament and hunting style that wasn't compatible with what the hunters needed the dogs to do. Furthermore, dogs are disqualified if they have orange and brown markings TOGETHER (on the same dog), this is linked to a cross between 2 homozygous dominant dogs, and is tied to health problems. Similar to lethal white, but not fatal.
The axes of the pelvis is 30 degrees, ideal for a trotting dog. The trot is preferred (and required for the Bracco) because it expends the least amount of energy over the course of a day in the field. The galloping breeds wear out faster. But the trot also has to be efficient.
Consider an angle greater than 30: this is a galloping dog, the angle allows for the dog to pull his back legs farther up under him and use less energy to do so. This is often coupled with a longer loin area (vs the Bracco, which has a longer chest, and shorter loin). Think of the sighthounds as an extreme example of this. Or the German Shorthaired Pointer.
The angle less than 30: yes, this dog trots, but more of the power produced by his hind legs is "up" and not "forward".... thus: wasted energy. The show German Shepherds are a perfect example. They have pelvic angles significantly less than 30, and they have beautiful flying trots. But what people don't realize is how useless that movement is. Their legs are flying out behind them but they don't have the angle or the musculature attachments to make it effective. Yes, it looks cool, but can they do it all day? No.
The angles of the Bracco's head should be divergent. Ie: if you extend the top level of the muzzle, it should continue up through mid-skull. Everything ties back to this being a trotting breed. When the dog holds his head up, it forces him to trot. The galloping dog needs to lower his head to even out his center of balance, and also not to constrict his airway. The divergent axes of the head in the Bracco allow the dog to still catch optimal scent from the greatest distance with his head held up. On the other hand, the Setters and Pointers are gallopers, and either have parallel muzzle/skull lines or convergent (dish-face). These are ideal for the dog that is running at break-neck speeds with his head and neck parallel to the ground. If the Bracco hunted in such a fashion, then his nose would be angled down into the dirt.
As the club's chairperson of the Judges' Education committee, you literally won't find someone else in the country that loves to talk minutia on this breed more than me.

I give a 90 minute powerpoint + hands on workshop on explaining how each part of the standard (every little detail) goes back to function in these dogs. I'm more than happy to send you the documents.