I'd be interested to know what theme you have in the background of your PS4. I currently with the Destiny Rise Of Iron free theme which has subtle visual changes with the fire and the Destiny song rather than PS4 one.
A story shown today some awesome ones that are interactive. One of the best is below and free - Abe's Odyssey.
So what's your preference? Or do you just have the stock blue screen for your PS4?