Appearance

Roan causes the coat on the body to have evenly mixed white and colored hairs.

Roan does not affect the mane or tail, and generally avoids the head and legs

The amount of white hairs varies between each horse, as well as the "even-ness" - it can appear slightly varnished or textured.

Optional effect: Corn spots

Corn spots on roan causes small "holes" in the roaning where the base coat is visible.

Additionally, on roaned horses scars and injuries can have the fur grow back in the same color as the base coat, without roaning.

Optional effect: Reverse dapples

Roan can have a reversed dapple effect, with dark dapple spots on the roaned areas. These dapples can be anywhere from just subtly darker, to completely showing the basecoat underneath. A roan with heavy dapple effect can appear as white lacing on the coat, as shown on the third example.