The artist Rose seems to like hydrangeas and paints them often, especially the mobcaps, with their fall tones of hushed blues, and purples, muted rose, gentle violet, and soft green. Hydrangeas, their petals papery and flushed with autumn, look for the entire world like the "Autumn Kisses" of the title.
The low-key, almost muffled color palette would bring a sense of autumnal peace to any home.