By all means. Weasels are slyer than a fox
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I don't fully understand the concept of attracting heat. Tin is a great conductor of heat. When the sun is on it it will absorb heat (abet black in theory should absorb more), but since it tends to be thin and a great conductor - the opposite side gets hot fast and convection will do a great job heating up the inside of the metal box. Net effect is uninsulated tin buildings tend to bake in the summer.
That said, convection should also move heat out of the building when it is cold and dark. I think that is along the lines of touching your tong to a metal pole on a double dog dare.