Microsoft today released a sunflower-themed HD wallpaper package called “Sunflowers PREMIUM” to Windows 10 users through the Microsoft Store, containing 17 high-quality 4K wallpapers described below:
In these 17 advanced 4K images, the warm and pleasant glow of sunflowers can be used as Windows 10 wallpapers for free. These images are used only as desktop wallpapers.
After downloading the wallpaper package, go to Start, Settings, Personalize, and Theme, and then click the theme you want.
To apply based on the current wallpaper and change to the most appropriate color, go to Custom, Color, auto-select the original color from the background.