Both in real life and in art, the relationship between light and dark creates a contrast in the images.
Explanation:
Contrast, both in art and in real life, is an opposition, differences in tones or light in a painting or photograph, highlighting a figure in relation to another figure or to the background. It is usually represented by the chiaroscuro and the effects of light and shadow.
Van Gogh in the work "The scholar" gives us a good example of the contrast obtained with warm and cold colors.
Impressionism attempted to capture the impression or brief effect of a sight, but expressionism used art to communicate exaggerated and distorted emotions.
I don't know when you thought of this but this is a great concept, its most likely that people's disabilities aren't holding them back, maybe it's just their surroundings.