No... It is a completely different equine identifying color.
A chestnut horse is a horse whose coat is basically red. Varies from a pale golden color to a rich, red gold. The mane and tail are normally the same color as the body, but may be lighter or darker than the body. If the mane and tail are lighter in color than the body, the horse is referred to as having a flaxen mane and tail. Sorrel is the what a "chestnut" quarter horse is referred to as.
On a black horse, all hairs are black, although white markings may be found on the face and lower legs. A black horse has black eyes, hooves, and skin. If there are tan or brown hairs on the muzzle or flank, the horse would be referred to as a seal brown.
It depends what you mean by "brown." A bay horse can come in just normal bay or dark bay. As obvious in the name, dark bay is the really dark brown, and bay is lighter, but over all chestnut is the lightest colour of brown. So, without confusing you (more than you probably already are :-P) you can tell the difference by how light the horse is. If the brown is really light then it is clearly a chestnut. If you search on Google Images, "Bay horse", "Dark bay horse" and "chestnut horse" you will be able to see how the different colours vary. But over all, try to remember that really light- Chestnut, Darker- Bay and really dark- Dark bay. Sorry if I confused you but I hope I helped =)
The Friesian horse typically only comes in black and that is the only allowed color in the registry. But they can very rarely come in what the association calls 'red' which would be chestnut, but these are rare and not allowed to breed.
Skewbald is a spotted horse with any base coat color other than black. So a skewbald horse could be bay and white, brown and white, chestnut and white, palomino and white, et cetera...just NOT black and white.
The differences between a buckeye and a horse chestnut is the way that they look. Buckeyes are bumpier. Buckeyes are a milk chocolate color when they are ripe, while horse chestnuts are a chestnut brown.
Skewbald is a spotted horse with any base coat color other than black. So a skewbald horse could be bay and white, brown and white, chestnut and white, palomino and white, et cetera...just NOT black and white.
The Percheron is not just black. They can be black or grey; chestnut and bay are very rare. Percherons can carry minimal facial markings and white on the lower parts of their legs. The Friesian is a breed that is limited to just the black color with no white markings.
If I read correctly you're describing a horse's chestnut. All horses have chestnuts, just like we have fingernails. It's just natural. There is no way that your horse's chestnut is what's causing him to limp. Maybe you should call in your ferrier or another horse expert to see what the real problem is.
Horses come in many different breeds and a huge variety of colors and patterns. There are three or four different variations of chestnut, bay, grey, roan, palomino, ect. There are dun, grulla and buckskin. These are just a few of the many different colors that horses come in. The genetics to produce some of these coat colors is complicated even for experts. But it is always fun and fascinating to study horse colors.
No, they are not. The nuts that are called chestnuts are poisonous to horses and ponies though.
They can be: bay light bay dark bay palomino piebald skewbald tri coloured which is piebald and skewbald mixed albino basically white coated horse with pink skin and white feet and blue eyes black buckskin a creme colour chocolate palomino horse between liver chestnut and palomino silver dapple like a black and grey horse mixed with a dapple patten flaxen chestnut body is chestnut but mane tail and forelock is flaxen sorrel redish horse cremello made by chestnut parents coming out creme nearly white coat mane tail and forelock with pink skin and blue eyes perlino creme coat with red/orange mane tail so on smokey black smokey creme creme orange and red coat mixed together more creme to make the horse lighter steel grey mental colour basically strawberry roan which is like the colour inside a strawberry dun like beige colour with black mane tail and forelock, etc.
leopards?? just a guess...IF YOU PLAY HORSE ISLE ONE CHESTNUT SERVER, ADD ME MYSTICALMARE
Red roan or chestnut roan is just a color it in no way affects how long a horse will live.