I was wandering about at the house I had just bought, and being a Death Student, I noticed it was a bit too bright and happy for living.
My idea is that there should be a set place in the house you buy, where you can change the weather, from sunny and clear to dark and stormy, or even change what time of day it is at your house. Like instead of it being middle of the day and all sunny, make it dawn or dusk. Have it to where you can make it partly cloudy, or full-blown storm clouds. I'd like a GM to contact me on this idea.
But what if I wanted to change the weather according to my mood? Like, let's say I didn't feel so dark and sinister, and just felt sad, or even a little happy. I could change it from dark and stormy to dark grey cloud cover, or even partly cloudy with a little sun. :D