You had ample opportunity to review before you installed. Guess you learned your lesson, eh?
While Apple products are top notch, if you truly want to have more options for customizing, avoid Apple like the plague and go w/ Android. It's nearly limitless if you look around at the custom ROMs, massive catalog of apps, etc.
Apple should allow people to downgrade from iOS7 or allow to choose the theme. I really dislike the new layout.