Pedigree Query

Had a chestnut filly born the other day. The mare is bay and the stallion is bay. Does anyone know if chestnut coloring is dominant or recessive?

Three years ago, the mare had a chestnut filly by a chestnut stallion.

Thanks for your help.

bcassidy, thanks for the info. A couple of years ago I noticed that Afternoon Deelites tended to throw turf horses. I don't bet very often, but always consider playing an Afternoon Deelites baby first time turf.

bcassidy, How do the following stallions rate on your model?
Afternoon Deelites
Boundry
Evansville Slew
Sultry Song

I breed to race. Thanks for your input.