This is your last white orchid until March, because of what happened last time I scheduled white orchids during the winter.
I wasn't watching out for very light pastels, though, and I'm not in control of what the Anthuriums and Schlumbergeras might do, so don't let down your guard. White blooms could still strike at any moment.
I don't have a lot to say about C. walkeriana; the most striking thing about it was that the blooms were pretty big. I guess I like their shape, though, now that I think about it.