WP-Indigo (Version 2)
WP-indigo is one of my projects at VitaThemes. Currently This theme has over 1000 active installs on wordpress and it’s a Blog/Portfolio type theme and it’s very great for those type of websites. Thanks to help of professional people in VitaThemes team, this themes is a powerful and minimal with great user interface and user experience which is recommended in many website and articles. check out this link for example.
Also This theme is available at WordPress Theme directory and you can download it for free there.
This theme also is included abilities like fully customizable features and custom wordpress post type which make it really easy to setup and use.