One of the problems with this kit is the roof does not have the three strengthening ribs on the top surface. The kit is designed to use the 'sunsheet', the thin second layer over the standard top, and with the sunsheet in place only the very front and rear of the three ribs could be seen. Without the sunsheet, the ribs are very noticable. The sunsheet is mounted about one inch above the standard roof, and helps keep the direct sun off the top. The Series Rover 'Tropical Top' has the sunsheet, four vents that open into the space between the sunsheet and top, and the 'Alpine Windows' on the side of the top. The sunsheet also has four oval bumps directly over the vents, for clearance when the vent is open.
The Tropical Top is usually painted an light tan called Limestone, or sometimes white, to help reflect the sun.
Bob