I have a question.... I would love to paint the woodwork around the ceiling and floor of my bathroom white. Just the bathroom. My question is - can I do this without having to paint the rest of the woodwork in the house the same color or can I leave it oak? There's some damage from the last painting job, tape, etc. that I was not there to supervise, so it needs something. Also, if I can just paint that one room, where's the "cut-off" with the doorway, etc? Thanks!