Retina Responsive WordPress Theme
http://themeforest.net/item/impreza-retina-responsive-wordpress-theme/6434280 This is an affiliate link FYI.
Frameworks · WordPress Theme
Get access to data on 149,307 websites that are Impreza Customers. We know of 74,953 live websites using Impreza and an additional 74,354 sites that used Impreza historically and 30,556 websites in the United States.
Get a list of 149,307 websites using Impreza which includes location information, hosting data, contact details, 74,953 currently live websites and an additional 27,633 domains that redirect to sites in this list. 74,354 sites that used this technology previously and 30,556 websites in the United States currently using Impreza.