Join Date: Sep 2007
Location: Washington State
In the case of sorrel/chestnut, we aren't talking genetics. We're talking what different people in different areas learned use in reference to red horses. In my case I always thought a chestnut was a red horse (any shade copper to rust) whose mane and tail matched the body color while sorrels were a red horse with a flaxen mane and tail.
As for the OP's post, I feel that you are trying too hard to convince yourself that your mare's color is something you value more, when in fact she is beautiful and unique even as a chestnut.