A lesser, more than usually idiotic version of the old be-glad-you're-what-you are gambit. A polar bear sees a rainbow and decides it would be nice to ""change his white coat into a colored one."" He infects a passing whale with the same idea, so they head for ""the lands where the animals have bright coats."" How they picked up this somewhat-less-than-accurate information goodness only knows, but anyhow--after annexing a tortoise and two crocodiles similarly inclined--they meet a parrot who is indeed multi-color, ed; and by dint of rolling in the red mud (the whale), rubbing leaves (the bear), etc., they turn themselves various bright hues--only to recant at the parrot's remark that they're silly (""His colors helps him hide from danger among the bright jungle flowers""). So they proceed to clean themselves in the river--where, up to this moment, their colors have been holding fast. Kids, dear author, are not dumb.