Very nice Prom! I've not seen a white one before. It makes lovely contrast with with the markings.
I'd say its more a cream color then a true white. The one I saw in bloom at the SOOS (Southern Ontario Orchid Show) was more of a pale yellow even. But like you I liked the contrasting markings against the pale background.
Any special care tips for these. I've just been keeping the medium slightly moist.