On the rear hatch, lead designer, Hideo Komuro created a subtle visual accent to compliment the overall minimalist design, while delivering functionality. The dip in the FX’s lower rear window glass was inspired by the design aesthetic of a Japanese kimono. The lower rear window and high mount center rear stop lamp, are sculpted slightly like a 'crescent moon', a detail that was associated with the neckline displayed when wearing a Japanese kimono. More than just a design accent, it served to enhance the rear visibility angle.