Body colors and interchangeable panels for this phone were developed to strike a chord with our senses by representing essential qualities. Style-Up® panels in previous models gave the handsets greater visual impact, and enabling users to add their choice of fragrance ("essential oils," so to speak) was another step in the evolution of the series. The OLED sub display, seemingly floating in a lid colored by vapor deposition, is a design detail that conveys an upscale image.