If gamut mapping defined by one Lab color space is applied in color matching under different reference white points, the human vision perceives the hue as inconsistent. The roof is provided with at least one roof piece and a rear piece that are pivotally interconnected and can be moved between a closed position in which the same close a roof opening or a rear opening and a stowed position at the rear end in which the same unblock the openings while being swiveled towards each other by the internal faces thereof. Also disclosed are OmiHtrA2 specific substrates and methods for identifying other substrates of OmiHtrA2. The low-threat response service then establishes communication between the subscriber and the responder or notifies the subscriber that the responder is coming to provide assistance.