The ePress site has an overall look which is set by the ePress admin but individual and group sites (blogs) can have independent themes which can themselves be heavily customized.

Default theme
Twentyeleven NomNom
The 2011 theme for WordPress is sophisticated, lightweight, and adaptable. Make it yours with a custom menu, header image, and background — then go further with available theme options for light or dark color scheme, custom link colors, and three layout choices. A Twenty Eleven child theme with 10 color schemes, 9 layouts, a variety of shortcodes, custom widgets and more

 

General purpose
 
Brightpage Chocolate-lite
with a cool Featured Slider on the home page a chocolatte theme
Coraline Duster
“A squeaky-clean theme featuring a custom menu, header, background, and layout.” “Duster is a sophisticated theme designed and developed by Automattic, offering a unique page template to turn your blog into a showcase of different kinds of posts – Featured with an image, Asides, Link posts, and more. “
LightWord Pilcrow
“Simply clever theme with two or three columns, “ “Pilcrow’s 6 different layouts, with multiple sidebar configurations, four default color schemes, custom header images (using featured images in posts and pages), and a customizable background, make personalizing your blog a snap.”
Redline Suffusion
“A lightweight but powerful WordPress theme built on WP Framework. Currently RedLine is available in English (default), Bulgarian, French, German, Spanish, Russian, Turkish, Italian, Vietnamese, Swedish, Belarusian, Romanian and Czech languages.” “An elegant, responsive, versatile and browser-safe theme with a power-packed set of options”. This theme can be set to be responsive (ie ipod / ipad compatible)

 

Photo portfolio
Minimatica Showcase
“A stylish and modern minimalist theme with a beautiful image gallery slider and an optional blog view. With support for post formats, audio and video playback, ideal for showcasing photography portfolio” “Showcase is a simple elegant flash slideshow based theme for WordPress”

 

Magazine Tumblr
Magazine basic Stumblr
“A Magazine-style theme with a fully customizable layout “ your ePress site looks just like that other place