Assume working with Penscratch2 template: https://WordPress.com/theme/penscratch-2/support
It will not require any color. The images will provide color. Font color to vary as seen in the template e.g. green within archives.
Create a blog site with social media connections, links to other sites and resources, page headers and navigation. Just as seen in the template, header logo image, custom menus with 2 children (if required, place savers for future children) single column top, widget areas for archives, tags, recent posts, and image gallery section containing a variety of sizes. On the go management. Flexibility to become a full on website in future. It will not be an interactive blog.
Assume that you will provide guidance with the selection and installation of power features.