My husband stained our interior doors today, a full 10 years after moving in. "There's no sense in rushing into things," he has always said. To give him credit, he put a lot of thought into this project. The interesting thing is that now each of our doors now has a cross on it, becoming visible only after the dark stain was applied. While this might upset some people, I think I rather like it.
Our priest has blessed our house a few times in the past. He visited each room anointing windows and doors plus adding blessed medals on top of the jams and on the window panes. I am certain visitors will wonder about our crosses. It should make for some interesting discussion.