BioShock iPhone 4S Theme!
You can check it out by clicking on the link below!
If you have any questions feel free to contact me!
Twitter - @GhostieSays
Facebook - facebook.com/ghostiesays
Email - GhostieSays@gmail.com
Moving to BioShock Off-Topic.
You have a jailbroken iPhone since you're using Cydia and Winterboard. I have my favorite Cydia extensions listed in this thread:
Apple iOS jail-broken thread