Using dry-shake color hardeners and a variety of stamping tools, contractor Mike DeReu, San Marcos, Calif., transforms conventional concrete flatwork into eyecatching walkways that embellish any outdoor setting. DeReu says that with the many stamping tool patterns available, almost any design is possible. The key to a high-quality finished product is strict adherence to proven construction techniques. DeReu offers the following tips for successful color imprinting of concrete based on his six years of experience: * Thoroughly compact the subgrade. * Use adequate reinforcement. * Protect adjacent structures. * Broadcast color hardener in two applications. * Use a colored release agent. * Remove excess release agent. * Apply a surface sealer.