If you want your roof to be warm in the winter (for melting snow, etc), make sure its black.

If you want your roof to be cooler in the summer, make it white. Why don't we do this? Fashion, and the desire to make sure someone will be willing to buy the house a few years in the future.

I live in tornado country, and I've seen a DOT structure that is thick steel-reinforced concrete in a dome shape. Its the shape that is the most resistant to high winds.

Why aren't houses shaped like this? https://www.thestructuralengineer.info/storage/news/562/featured_image/1160/665e96c29d55b13435d7a8d39deafe53_XL.jpg