watercolor frame with bright multicolored autumn leaves and maple winglets, chestnut fruits, oak acorns and pine cones

abstraction acorns autumn background botany branch bright chestnut cloudy color colorful compositions cones cute day decoration decorative design drawing element environment floral foliage forest fruits garden graphics happy illustration leaf leaves maple multicolored natural nature oak october orange outdoor pine plant red season set sky striking texture traditional tree watercolor white winglets yellow