How do ODI teams choose their colours?

There is no hard and fast rule about choosing cricket colours. In most cases, the country adopts colours from their national flags – as Pakistan, Bangladesh, England, West Indies, Zimbabwe do. In some cases, the country wears the national colours – Australia wears green and gold, Holland wears orange, South Africa wears dark green and New Zealand wears black (silver earlier, as silver and white are their secondary national colours). India wears blue because of the blue Ashok Chakra on the flag, and the Board of Control for Cricket in India (BCCI) flag is also blue.