The following are some pictures of fat. My failing in the original (below, middle), which I have on good authority, is that I confuse color with value. So: the woman's billowing thigh does not recede into the background quite as it should, since the complement of red was not used to darken it. It is hard to get a grasp on exactly what shape the model's massiveness takes in space, with the planes coming forward and backward. In a system that I would define, fatness would work in such a way: the invisibility only barely outweighing the visibility.