This is a CAS background inspired by the TS3 Pets CAS/ CAP (?) background. It will replace the boring blue background.
Before TS4 Horse Ranch released I was playing with TS3 Pets and was reminded of how much I loved the CAP background. I waited for someone else to give it a try, but I couldn't find an override until now. So here is my attempt! I built the barn in TS4, so that the TS4 Sim wouldn't look out of place in a TS3 background.
Note:
This is only a plain 2D image, that's why it gets a bit pixelated when you zoom in and Sims could appear to float, but it serves the purpose :)
Only use one CAS background file at a time.