Got in touch with Excel Service department, The roof is gray on top and they do around the sides in white so you don't see the gray from the ground, they remove the rubber roofs on other units and the vinyl alpha ply roof on the Redwood. They change the gaskets on the A/C units and vents. The weight he said is the same or little difference. The price for a 36' RV at 102" wide is 6240.00. You can see the color on the Excel website under Rhino roof.
2012 Ford F450 Lariat FX4 dually, 2013 Redwood 36FB Red and Black Painted