This problem is not necessarily directly related to how six colors are distributed on six surfaces. Just determine the answer according to the relationship between the picture and the six colors given. The answer is as follows: the color corresponding to yellow is green, because yellow does not correspond to purple, black, blue, orange and its own yellow, so only green has never appeared among the six colors, so it must be green. And so on: purple does not correspond to yellow, black, green, orange and purple, so it corresponds to blue; Orange doesn't correspond to blue, yellow, green, purple and orange, so it corresponds to black.