When I was growing up, I saw a lot of houses like this, down around where we lived. There was even one that was all blue–roof, walls, porch, chimney. All bright, vibrant blue. Even had blue posts, sunk into the ground at the edges of the property, with silver dollars nailed to the tops.
I always wondered what they were afraid of. Must have been nasty, whatever it was.
Anyway, ghosts don’t like blue. It’s a fact. Everybody says so.