Hello Theme has one goal: To showcase an image with an introductory message and a link to your main content. If you have a message that is mainly visual, this theme will communicate your message clearly. This theme would be very good as a holding page for your site under construction.
Recommended blocks for this theme are:
MrKDilkington - Full Screen Background Image and Overlay
All of these are used on the demo site.
This theme was not designed to be your sole theme. It is for introductory and special pages. Of course for a small site with a brief message this theme may be ideal.