|Step 1: Select the picture you want to use as your background. For best results, make sure the dimensions are 600 x 450, otherwise it'll wind up stretched out or squashed.|
|Step 2: Move or copy the picture to the Storytelling folder in your EA Games folder.|
|Step 3: Delete the picture called "CAS_auto_bg"|
|Step 4: Rename your new background picture "CAS_auto_bg"|
|The result is something like this.|
I thought this would be an interesting thing to do, seeing as maybe not everyone liked that old blue background or wanted a change. This will work with all photos. I'm not sure about formats- I'll have to test it some more. Or you could screw around with it. Just remember this will only apply to families you make after the next time you open the game. Later!
(And, yes, I am a Hetalia fan. Picture by khakipants12 on deviantart.)