What are the best themes for Commerce sites?
Currently, there are no themes providing specific styling for Commerce components. This should change in the coming months, as selling themes specifically for e-commerce usage has always been very popular in the premium Drupal theme market. Additionally, expect some contributed themes and base themes to take into consideration styling product pages, the checkout form, etc. Right now, Drupal 7 theming is really just getting started.
The demo site uses the Corolla theme slightly modified to better size and position elements of product display nodes and teasers. We'll update this FAQ with a list of recommended themes as more become available.