My in laws open the front and back door, and I suppose we will too. They also had my brother-in-law(who has dark brown, almost black hair) walk in the front door before anyone else could. I guess my husband will have to do that even though his hair isn't quite as dark as my brother-in-law. They also eat ham sandwich. I don't know if that's for luck, but we've done it every year I've been here.
Growing up we used to clean the house and make sure we showered and washed our hair New Years Eve. We never put up new calenders until the New Year, a superstition that I still have to this day.