Typical dun

Dun dilutes most of the coat into a lighter shade, anywhere from very subtly lighter to a bright, creamy beige. Dun will always leave an undiluted "dorsal stripe" along the back/topline, undiluted rims on the ears, as well as undiluted legs or at the very minimum undiluted knees/hocks/fetlocks. The bottom/front of the face (between the muzzle to the eyes) should be undiluted as well, and may optionally extend further leaving most of the head undiluted.

Mane and tail should not be affected by dun, except for an optional "frosting" effect (see further below), diluting only the outer edges of the mane & tail.

Optional effect: Primitive markings

Common primitive markings are stripes on the knees/hocks ("leg barring"), stripes/barring around the withers, and "cobwebbing" on the forehead, but can also extend further.

Primitive markings should be the same color as the undiluted coat "under" the dun, and mimic the appearance of zebra or zorse stripes.

Optional effect: Mane & tail "frosting"

The mane and tail can optionally be affected, similar to Norwegian Fjord Horses, with lighter hairs on the outside edges of the mane and tail. A heavy frosting effect in the mane and tail can be even brighter than the diluted body coat hairs.

If primitive markings are present, the mane and tail will not show any frosting where the primitive markings "touch".

The undiluted dorsal stripe along the horse's topline causes the middle of the mane and tail to be unaffected by dun, giving it a two-colored appearance.