Hostmarks is a very clean and simple blog theme. In fact it is a simplified version of the original theme for this very site. It features a clean layout with contemporary typography, and the ability to customize all the principle theme colors right from the customization menu. Of course it is fully responsive, supports custom menus and widgets and comes with an alternative blog page template as well as a plain full page template for static content.
Released under GPL 2.0 License
If you are looking for a new theme there is a decent chance you are setting up a new site and might be in the market for a hosting provider, in which case you should check out our very thorough performance comparison of all the big players in the WordPress hosting space.