You should have your saddlery ( bridles / saddles etc ) in BLACK. It goes with almost any other colour and will suit almost all horse colours. It is also easy to add to, there are always differences in browns ( I know , I get 3 different browns from 3 suppliers that are called the same colour ) , added to which browns will fade slightly in time or will darken if oiled ( DON'T ever oil your tack - but I know people do )