BMF CONSTRUCTION Hi, I believe it is a Benjamin Moore color ("Turning Leaf"?), but the manufacturer is Modern Shed Company, so I would confirm that with them.
If you want to reduce heat, do the reverse: Install clerestory windows on the north side of your home, which will allow natural light in during the cooler part of the day. You can also install them wherever tree shade will filter direct sunlight. Consider installing clerestory windows in unexpected locations for maximum natural daylight. For example, the clerestory windows on this garden shed by BMF Construction reduce the shed's reliance on electric light.