What is the theme in Odour of Chrysanthemums by D. H. Lawrence?

The theme of light and darkness is of signifi-cance since most of the story takes place late in the afternoon and at night, and the narrative focuses on the relationship of life and death. Elizabeth Bates awaits her husband as shadows lengthen, her son emerges from dark undergrowth, and her daughter returns late from school. The family huddles in the house where the light is insufficient for Elizabeth's son John, who, like his father, always craves more brightness and warmth than his home provides.