We regularly get questions on how to match brown riding boots with your clothes and gear. As a general rule we will people you can match them with anything as long as you are not brining in too many colours. Stick to 3 main colours for you and your horse. For example brown boots, black saddle and bridle and navy pad and boots.
It might surprise you but you can easily match brown riding boots with black leather tack. Your bridle and saddle doesn't need to be brown for you to match it. Actually many riders prefer to keep black tack and match it with brown boots. If you do march the boots with your saddle make sure you get the same colour brown.