Melissa Colley at Saco Scoop in Saco, Maine. A Door That’s Always Open It’s a Monday afternoon on Main Street in Saco, Maine, and the Saco Scoop shop smells like hot fudge and waffle cones. Behind the counter,  Melissa Colley  greets every customer by name — or, if she doesn’t know it yet, simply as “my friend.” “Because that’s the way it always was,” she says, glancing at the handwritten menu above her shoulder. “And don’t change what’s not broken.” At 209 Main Street, next