@freemo It depends on how cold it is, just how "polar" it is, what time of year it is, and how sunny it is that day. But on average if we're talking winter temps and further north than me in southern Canada, I'd say no noticeable difference.
@freemo hmm well the sun only gets 23° above the horizon at the poles, but it'd be a land of the midnight sun type situation and it gets pretty warm at the north pole apparently, like 0°C in summer, so uh... I have no idea. Black! I put all my money on black.