It was strictly an aesthetic choice and as another commenter points out it doesn’t impact the livability if you build it with proper insulation. You can read a

It was strictly an aesthetic choice and as another commenter points out it doesn’t impact the livability if you build it with proper insulation. You can read about the performance of the exterior black color in high temperatures on the website where we listed all the materials we used to build the house, how much they cost and details about the construction: https://www.weshelterpeople.com/materials-and-costs https://www.weshelterpeople.com/materials-and-costs