http://www.reddit.com/r/iOSthemes/comments/1e0atf/how_to_achieve_this/
just read the comments, they tell you that the theme isn't really real.
I just want the keyboard and BiteSMS theme. :O
I just glanced through the reddit link (I don't care for themes) and I believe I saw how these were accomplished. Have you read through the thread on reddit? You might find some guidance on how to get the keyboard and bite theme.
i found nothing there to suggest that the theme is not real.
there is general agreement though that it was designed by this guy who is not willing to share the details of his craft.
to be honest i think its a bit unfair some people calling him names over at that site because of this. he is under no obligation to disclose his findings.