Today, I’ve come to rely on the large green signs to get me where I’m going, and the faster the better. At least they WERE my choice until a friend told me about the signs he follows. His signs aren’t placed to speed up the trip but to slow it down. Beverly and Richard Darlington follow brown signs on road trips. They’re the ones that direct travelers to historic buildings, museums, state parks and other places that put the “entertainment” back in driving …