Owners inevitably paint the exteriors in a cheerful riot of bright red, green, orange, blue and yellow and line the un-air-conditioned cabs with teakwood to keep them cooler in India's searing heat.

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With their orange, duck-like feet, black-and-white penguin body and bright red, parrot-like beak, puffins have an irresistible charm, despite their ridiculous appearance when airborne.

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Drawn on a piece of paper, the spokesman said it was "full of the pop art motifs we have now come to recognise, including Warhol's signature bright red lips, made using lipstick, and a typically pop art blocked background, coloured with green and orange felt-tip pen".

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