I don’t have any chestnuts in my barn…not my favorite color either. I tend to not select chestnut stallions for the same reason. Although, I did want to breed to one liver chestnut stallion, but breeders at that time, where not being successful with his frozen so I chose his bay son instead.
That said, I have a bunch of grey, bay and black. I no longer favor black…poor things seem to get very hot on summer turnout so I have to manage them more closely. My grey ones stay amazing clean on their own…not sure why. I did have someone come up to me at a show while I was holding my grey mare with her championship ribbon and tell me they didn’t like grey horses…until she saw my mare:) I am waiting for that vaccine against melanomas. I think grey horses might become more popular if the vaccine works. Maybe…maybe not.