Look how dark her legs are, compared to the color of her body. That looks like a bay to me. The silver gene removes all or most of the black from the mane and tail, and dilutes it elsewhere. The light mane and tail, red body, and slightly darker legs of this horse are classic Silver Bay. The light around the eyes, light muzzle, and light belly are known as the Pangare effect, and yes, it often is seen in Halfies and Belgians. If you had this girl DNA tested for color, my bet is that she'd come up as a Silver Bay (black + agouti + silver). There isn't a test for Pangare (also called "mealy"); they aren't even sure if it's caused by one gene or a combination of genes.
Ok so a silver bay or just bay?