Now here is the big problem. I believe that one should just put the two bowls at the bottom in at random, whereas Robert thinks that they should be placed with the black one underneath so that the top two pairs each have different colors and thus we are never subject to eating cereal from the same color bowls. I didn't realize how serious this was until a few days ago I discovered that he had reversed the order of the two bottom bowls because for some odd reason I remembered the order that I had put them in.
What is completely revolting is that I seemed to have succumbed to his methodology, having at least twice recently placed them specifically in his preferred order.
Now, the major flaw to this method is that the usage of each of the 5 bowls is not even, since the black bowls get lower precedence. Each black one gets two uses for each three uses of the red or blue. If the two bowls were placed at random, then they'd get even usage over time.
This is a matter that may have to be seriously dealt with.