some of the icons on the homescreen are cute! is there any way to change just the icons, but use your own wallpaper still?
You would have to download the particular theme, unless you want to go through the hassle of creating your own. Most of the screen shots on this page are actually of the same theme---OSX PRO HD by ecruz---which can be found in the appstore. All the themes that I have downloaded so far allowed me to change my background...so just go nuts!