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 170,385 websites that are Impreza Customers. We know of 76,395 live websites using Impreza and an additional 93,990 sites that used Impreza historically and 30,503 websites in the United States.
Get a list of 170,385 websites using Impreza which includes location information, hosting data, contact details, 76,395 currently live websites and an additional 27,399 domains that redirect to sites in this list. 93,990 sites that used this technology previously and 30,503 websites in the United States currently using Impreza.