For a great pair of brown boots that look good paired with the kilt, head to a decent surplus store and look for a pair of Double Buckles, you know, the sweet ones with the lace lowers and buckle cuff uppers. Here is the kicker, find a pair made by one of the US friendly nations in the 50's and 60's. They have near zero collector value and are even better made than most of the US issue ones. I think mine might be Dutch, I paid a whopping $18 for them, about 10 bucks worth of oil, polish and elbow grease brought them back to life, and they wear like iron.

Justin Runyon
Organization of American Historians
Company of Military Historians