Black & White is always a good format for photographing a Haunted House. It makes the shadows deeper & more eerie.
In the old days of film, you could, in either order, under expose a picture of a person dressed in flowing garb, then take a regularly exposed picture of a staircase, window, field, whatever over the top of it. The same negative was used. This was called a double exposure. Today, it's been replaced by "Photoshopping."
Freaky trees can make a freaky house more freaky!
Color just isn't a good format for a haunted house.