Its figures and space form a unique context, both are united by the forms of its content.
The shadow is just a spot of color that is juxtaposed to the other more or less bright ones. There are relationships between the color spots, each one is influenced by the others, which it also influences like the fruit that appears in the foreground, or the flowers in the vase that integrate and acquire value when they come into contact with the yellow of apple or oleander white, dark colors like black are color notes of equal intensity and value, black and white are mere colors.