In Robin McKinley's "Sunshine," the roses express a complex relationship with both light and darkness. While they appreciate the sun that nourishes them, they also find value in the dark, where their roots delve into the depths of the earth's mysteries. This duality highlights the importance of both elements in their existence.

The roses convey a message of acceptance, suggesting that one does not have to strictly choose between light and dark. Instead, both aspects can coexist, enriching their lives and growth. This idea encourages embracing all facets of life, acknowledging that both sunshine and shadow are essential to fulfillment.