I need to correct my previous remarks. I finally was able to locate a couple of light yellow bellinas that were awarded. I think that they are both recorded as Phalaenopsis bellina ‘alba’. Like I said, both are pale yellow like the one at the beginning of this post.
Both have white, or nearly all white lips. There were no images showing the shape of the leaves.
In looking at additional award images, I found a few other images, 5 maybe, of bellinas that were essentially pale yellow but with varying amounts of a pink blush. The blush was central on the flowers, mostly on the sepals.