I have the white shades inside the front windows. I also have the sunscreen black mesh covers that snap on on the outside.

I am not 100% on this, but once the solar energy is through the glass of the windsheild, it realy doesn't matter what color the shades are. I don't believe that the reflectivity of the white shades is sufficient to send the photons back out through the windsheild.

I will tell you this much, that when the sun gets to beating on my bus, it gets hot in at the driver's area. It gets really hot between the shades and the windsheild. So hot in fact that the heat softened the glue on the white shades and caused the fabric to seperate from the roller.

Now that I see how these things are put together, I considered changing them to something else and while thinking it through, I came to the above conclusion. And in my best Yogi Berra, the way to keep the heat from coming into the bus is to keep the heat from coming into the bus.

I will try to get the outside shades on as often as possible. I will also be making sheilds from the reflective bubble wrap insulation for all my windows to be set in place while the coach is in idle in storage. I am afraid that the small amount of UV, the IR and the heat will just destroy all the other shades.

Anyway, that's my 2 cents.

P.S. These shade fabrics are the same thing they use on greenhouses and for sheilding nursey stock. Usually, you can order a fabric and specify how much sunlight blocking you want to acheive. Again, they go on the outside of the glass.