ThemePark 3.1 Posted 12/01/2006 at 16:23 UTC in Mac by gnye@amdesign.net | Permalink | Tweet ThemePark 3.1 lets you modify the way Mac OS X looks, as well as to change the appearance of individual applications. Just draw titlebars, buttons, and other widgets in the graphics editor of your choice, and move them into ThemePark to create a new theme or modify an existing one.