For interior designer Cory Connor, principal of Cory Connor Designs, in Chatham, New Jersey, gray is a go-to backdrop for living rooms. "It works with everything," she says. A case in point is this vibrant, beach-inspired space. "I wanted a nice neutral that worked with the coral bookshelves and turquoise-and-white furniture," Connor says. On the walls is Restoration Hardware's Graphite, part of their Slate Paint Collection.