I would also buy a black bridle and breastplate, and sell the brown one. Cheaper than having to buy a new brown saddle!
Unless of course you really like brown and are considering changing your saddle anyway?
Horse is just a project, so saddle fits as does bridle, but need a new martigale as all mine are too big. Not too bothered about bridle not matching saddle, but figured the martingale may as well match one of them!