Free bioshock theme http://www.ps3-themes.com/ type in this link and search for bioshock some cool themes honestly not sure if ps4 has free bioshock themes. : r/Bioshock
Ps3 Themes - Wallpaper Cave
Pete Fowler PS3 Theme | Clutter Magazine
Create Your Own PS3 Themes – PlayStation.Blog
Sony teaches you how to make your own PS3 themes – Destructoid