Emobilez has a section where you can find themes for ipod touch, There are many types and styles, you can select the one you like from a variety of themes and best of all, you can get for free without creating an account.
The themes change the icons, wallpaper, menu bars, among other things, in the style of tema.Si not know how to install do not worry because the topic that you download comes with a file named "readme" which will tell steps to install the theme on your ipod touch. This is the link to the section of tracks for your iPod touch: