> I agree.  The only reason I brought this up is because the original
> poster made a special point of the fur color.  As an additional aside,
> some animals seem to have evolved fur that have special properties
> with respect to IR and visible radiation.  Polar bears are being
> studied for this

And as another aside, the fact that animals such as Arctic foxes
and hares change coat colour to white in winter rather than keep
a dark colour to absorb heat shows that any absortion just happens
at the surface of the fur. Obviously the insulation of any colour fur
is sufficient and the better survival tactic is camouflage. Not
thoroughly [OT] yet, if you consider how nature can produce such
an excellent insulator as duck down, which I believe has yet to be
bettered by the boffins

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