OK, so rhinos etc are colour blind, what about hippos, he was hanging around hippos too - and elephants. I did learn that if an elephant flaps it's ears that means it's angry, so that could come in useful.........
I know what you mean about American Wife Swap, Hump - I don't start watching that because I always end up shouting 'Why are you so stupid' loudly and repetitively and it upsets the neighbours!