Our picture is meant for the issue of world hunger. It is colored to show how hidden the issue of hunger is. The very small people next to the very large food stand out to show how hungry but too weak to get food themselves.
It compares to our pictures in the sad way. Scott's picture has a depressing hidden mood and so does mine. The color describes the hidden sadness and depressing aspect. Also the similar meaning between all 3 is that people don't realize how much waistline effects other people or animals.