See, I don't get this - it's not like any light color is cool! Once the temps start hitting hitting the upper 90's, it could be wrapped in tin foil to reflect the sun and still be 200+ inside. Hot is hot, I've lived in Texas all my life, had cars and trucks of all colors imaginable - and I've never known the exterior color to make a tinker's damn difference in the interior temp. I have black on black CX-5 and you bet it's going to be hot inside this summer - just like every other single car in the parking lot at 5:30 pm in August. You roll down the windows, let the superheated air out, let the AC do it's job and once it starts cooling, roll up the windows and enjoy the frosty air! All this talk of "oooo, you can't have a dark car in Texas, it's too hot" is hogwash.
eta - I would say bulls*** but not sure it will let me.......