Material Design Theme
http://themeforest.net/item/zephyr-material-design-theme/9865647 This is an affiliate link FYI.
Frameworks · WordPress Theme
Get access to data on 40,677 websites that are Zephyr Customers. We know of 13,914 live websites using Zephyr and an additional 26,763 sites that used Zephyr historically and 5,495 websites in the United States.
Get a list of 40,677 websites using Zephyr which includes location information, hosting data, contact details, 13,914 currently live websites
and an additional 10,598 domains that redirect to sites in this list. 26,763 sites that used this technology previously and 5,495 websites in the United States currently using Zephyr.