That guy at the Boise store might be right about one thing but not the way he said it. Finches are picky about where they eat, but it's usually the perch space and seed that matter most. Nyjer seed in a tube feeder with small perches is what pulls them in, not the color of your setup or how many feeders you hang. If your feeder is swinging a lot in the wind or sitting too close to a window, that will spook them more than anything else. Birds also need a few days to find a new feeder, so if you just put it up, give it time before you change anything. I'd check the seed first, make sure it's fresh, because old nyjer goes stale fast and finches will flat out ignore it.