THE TRADEMARKS OF A GOOD DESIGNER ARE AN IMPECCABLE EYE FOR COLOR, a sense of harmony and a clear vision for the project. The Rose Creek home of Mark and Traci Miller is in every way a reflection of flawless design. More notably, the home is the lovely collaboration between homebuilder Sheryl Willingham of Willco Homes and homeowner Traci, whose penchant for design suggests that the pharmaceutical sales rep by day has a very gifted alter ego.