Clean Blocks is a simple and clean theme, fully compatible with Gutenberg.
The homepage can contain hero header with call to action, slider based on selected pages, service block, portfolio and testimonials. For this blocks you should install Essential Content Types plugin.
Sidebar can be turned off. The theme provides widgetized 3 columns footer, as well as footer social menu.
In the free version of the theme the color is configured only for the site’s name, also you can upload an image logo.