Just as a side note -
"Phalaenopsis manni f. flava A.E. Christ.,f. nov. - ...
This is the anthocyanin-free form of the species. Although informally designated in horticulture under a variety of names (such as varieties
alba and
concolor), a valid botanical name has not been published"
This quote is taken from the book Phalaenopsis: A Monograph by Eric A. Christenson
Here is a nice little site with some info on this species -
Translated version of http://pagesperso-orange.fr/bernard.lagrelle/Mannii/Mannii.html