Looks great. I like the idea of changing the door colour, that should help significantly. I was initially skeptic that you'd manage to keep things fresh throughout the game, but I can see your implementing a whole bunch of new ideas. However, even so, there's a risk of people becoming frustrated if the game is too difficult or not manage to take the atmosphere. Still, its looking good and I'll try to keep watch to see what you can achieve!
Cheers!
PartyZombie
I've been up for 34 hrs without coffee.. :\