Selecting a single color for the outside of your house can be difficult enough, but trying to find two or more hues that work well together makes the decision even more challenging. Whether your aim is to highlight architectural details or simply to find a complementary shade for shutters and trim, the choice is an important one. "Color can make a big impact on the look of a house," confirms architect Jim Rill, principal of Rill Architects, in Bethesda, Maryland. For inspiration, consider your home's style and scale as well as architectural styles typical of your neighborhood and region. "The best exterior colors are contextual to their environment," Rill observes. Here, 9 combinations that hit the mark.