Answer / dhanilunni

the coffee colour may be easily noted
and we can see the moisture or dust content in the insulator
very easily than other colours

Answer / harekrushna

because u see the fault is easily mark

Answer / madhan

this answer may be funny,but its true.
with the blue background of sky,the brown color will not
disturb the human mind,its a physcological one.

Answer / arpan

to minimise the rate of heat transfer

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