Sun flowers are of course instantly identified with Vincent Van Gogh who also was interested in painting, among other things, night scenes.
He wrote to his brother Theo: "It often seems to me that the night is much more alive and richly coloured than the day...." (Van Gogh's Night Visions - Smithsonian.com)
From The Utter Zoo Alphabet by Edward Gorey: "About the Zote what can be said? There was just one, and now he's dead."
From the Iron Tonic by Edward Gorey: "The light is fading from the day. The rest is darkness, and dismay."
Two divergent artists living in different times who both creatively explored darkness without great fear. Beauty and The Humour.