The new theme package Sunflowers PREMIUM, uploaded today 19/2/2020 and contains 17 high quality 4K wallpapers, the description of which is as follows:
Enjoy the warm glow of sunflowers, near and far, with these 17 premium 4k images, which are free for themes. Windows 10. These images will only be used as desktop wallpaper.
After downloading the gallery, go to Start> Settings> Personalization> Themes and click on the theme you prefer.
To apply the new theme and change it to a more appropriate color, based on the current wallpaper, click Personalization> Colors> and Select "Automatically select accent color from my background".
The minimum requirements to install the theme are: Operating system Windows 10 version 14951.0 or later version and Architecture x86, x64, ARM, ARM64.