OK, it will have spots... it seems that spots are what counts.

If you feel like it, could you make a little list or two of possible places/frequency for spots?
Socks will come there, since they are not quite a facial mark.
Any suggestions are more than welcome!
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Placeholder for stuff:
Colors flown proud (the basic colour)
Grey - a mixture of black and white hairs throughout. Coat varies from light to iron grey. Skin is black.
Fleabitten Grey - grey coat flecked with brown specks.
Dappled Grey - light grey base coat with dark grey spots or rings.
Bay - reddish coat with black mane, tail, and points (limbs, see socks). Coat color may range from red to brown or yellowish.
Chestnut - varies from a pale golden color to a rich red gold. The mane and tale may be lighter, or darker than the base coat.
Liver Chestnut - the darkest shade of chestnut.
Sorrel - a light red chestnut.
Brown - a mixture of black and brown hairs with black points, mane, and tail. A very dark brown horse may appear black.
Roan - any body color with white body hairs interspersed. Overall lightens the color of the horse.
Strawberry Roan - chestnut body color with white hairs, giving the horse a pinkish tinge.
Blue Roan - black or dark brown horse with white hairs giving a blue tinge.
Dun - light sandy colored coat with black mane and tail, often accompanied by a dark dorsal stripe extending from the line of the neck to the tail, and sometimes by stripes, or bars on the withers and legs. These are considered primitive markings. Dun can vary from yellow to a buckskin/mouse color. The skin is black.
Palomino - gold coat with white mane and tail.
Spotted - small, more or less circular patches of hair a different color from the main body color. Sometimes called Leopard Spots if the spots are small and in profuse number.
Piebald - large irregular patches of black and white.
Skewbald - large irregular patches of white, and any other color, except black.
Cream - cream colored coat with unpigmented skin. Also called Cremello.
Brindle Brown - or grey streaked or patched with a darker color.
Facial MarkingsStar - the horse has small spot, ot splash of white in the center of the face, usually near the top of the head, between eyes.
Stripe - thin verticle stripe of white running from the center of the face, down to the nose.
Snip Star - located on the nose, or muzzle of the horse.
Interrupted Stripe - snip, star, and a seperate bar between the two.
Blaze - wide white stripe extending from the top of the face down to the muzzle. Blazes are common.
White Face - the horse has a solid white face
Socks - generally a horse with white, or black feet or legs and a coat of a different color. Socks can range from coronets that are little more than a white ring around the top of the hoof to High socks that cover the majority of the leg. (This one will go to Spots.)
No special mark of any kind. (There should be such horses, too.)
Attributes (may pick two of each, but need more options in that case)
Good Attributesendurance, doesn't spook, hard hooves, good teeth, strong bones, good legs, defined musculature, high arched neck, good movement/locomotion, good spirit, energetic
Bad Attirbutessoft or brittle hooves, bad teeth, weak or light bones, poorly conformed legs, poorly defined musculature, lazy neck and sloppy locomotion, mean spirited, lazy, likes to bite, aggressive, conformational defect (-> another list, see below)
Conformational DefectsBack at the knee The knees of the front legs extend backwards past the line of the fetlock and shoulder.
Calf knee knee joint is shallow from front to back. Poor action in the joint.
Cow Hocks hocks (back leg 'knee' joint) turn inwards when viewed from behind. Knock-kneed
Ewe Neck Neck is concave on the top, and convex on the bottom, a thick and droopy neck.
Herring-Gutted horse has an upward slope from the front to the back of the belly. Looks like a greyhound. May have cholic and digestive problems.
Over at the Knee Horse has knee joints that protrude forward. Knobby knees.
Pigeon Toes Toes turn inwards. Poor action, possibly much easier to injur legs, joints
Roach Backed Spine has exaggerated upward curve, really unpleasant ride, later on, back problems
Slab Sided horse's ribs are flat, as opposed to being rounded outwards, or 'well sprung'
Splay Footed Toes turn outwards, horse has very sloppy walk.
Sway Back Horse has exaggerated downward curve in spine. Looks broken down, despite age or condition
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Test-generated result (just picking the first options of every list):
The basic colour is Grey - a mixture of black and white hairs throughout. Coat varies from light to iron grey. Skin is black.
On its face is a Star - the horse has small spot, ot splash of white in the center of the face, usually near the top of the head, between eyes.
On the positive side, the horse has endurance. On the other hand, it has soft or brittle hooves.Not sure if I want to include horsetypes, but it is an option.