Chiaroscuro is an art term referring to the use of shadow and light in a visual work. One beautiful example is the work of Nermin Er, an artist based in Istanbul. Her papercraft work uses the play of light and shadow to beautiful effect. Her cut-paper designs would be impossible without both light and dark, illumination and shadow.

You can view her artwork here:

Possible Preaching Angle:

There's a powerful principle of beauty here—light is impossible to truly appreciate without darkness. As you think of your life, with whatever proportion of light and shadow it might have, do you see any glimmers of beauty in the interplay of the darkness and light? I don't mean to sugarcoat loss, harm, or tragedy. But the truth is that God, like Nermin Er, is a master of pulling beauty out of dark places.