http://www.phpbb.com/kb/article/installing-a-new-theme+template+style/]Knowledge Base – Installing a new theme/template/style
name = prosilver
copyright = © phpBB Group, 2007
version = 3.0.2
Change Above things from “style.cfg”, “imageset.cfg”, “template.cfg”, “theme.cfg”. Below type
name = yourtheme
copyright = © yourcompany, youryear
version = your version