Recently, I have only been parking in two places, under the carport at home, and in front of my parents' house in the mountains, where it may only reach 60°, although if I do not use my mylar-faced bubble sun shade and crack my windows, I get quite the solar oven effect!
My windows are tinted, which I did not realize at first, so it must be a legal tint, unlike the one that I had installed on my silver Forester; I went with the tint level of the police cars and highway patrol.
It actually works better to have the shade on the outside...
I discussed putting white Plasti-Dip on my black Civic on here before.
I guess that I could just do the roof...