I will never get over the Perry Mason movies where Perry's office is all dark academia with deep colors and oversized leather chairs and dim reading lamps and velvet curtains and he is in dark suits and turtlenecks with his sea captain's beard...
and Della wears pastel blazers and flowered blouses and heels with bows and lives in a cute little cottage with a garden...
They shouldn't fit in each other's spaces so well. But. Della is this somehow-complimentary, bright, sunny spot in his life. A little softness to the harsh angles and textures. And he adds just a touch of structure to her life, like a trellis for her flowers to grow on. Something solid to anchor around.
Anyone else who comes into their spaces looks out of place, but they are two sides of the same coin.