This WEB 2.0 style themes are full compatible with Prestashop v1.0 and 1.1. If you use lates version (1.2.X) you can use this templates too, but you must go to your Admin panel, open Preference tab, and scroll down. There click for "v 1.1 theme compatibility". Your shop will running without problem, only SSL will generate warnings in customer browser. If you are ready tu buy themes for v1.2, lets go to section "Themes for Prestashop 1.2"