There are hundreds of different Breeds, Styles, Sizes, and Disciplines when it comes to horses. Horses' characteristics vary depending on their background, purpose and overall living conditions.
The color of a horse’s coat was a bit more important before most horses were domesticated and played a part in whether they needed to blend in, camouflage, or hide from a predator nearby in the wild.
A blood bay colored horse will have a brown body which appears as a deep blood-red color, and may even appear a deep purple or plum color in some lights.