They say that at the end of the rainbow there is a pot of gold, but in my opinion it would be far better if there was a wedge of cheese at the end of every rainbow. Although it would theoretically be possible to use rainbow gold to buy cheese this would take time and would be subject to global markets, whereas the price of cheese is stable and therefore a less risky investment. Also using the rainbow gold to get the best house loans by considering different options.
Also I would think rainbow cheese would be very special and unique, whereas gold is a basic element. Anyone desperate for gold could always sell their cheese, it is just a question of looking for it in those hidden places.