White gold in Rolex, is it greyish or....?

[timelord]

silver white gold?. I recall on a previous post in the tech section http://rolexforums.com/showthread.php?t=168380
"TRF" Member crhfish gave wonderful data on the many types of combination of alloys for the different gold colors. He mentions that white gold comes as grey white gold and white gold. For those who own white gold Rolex which of the two does it appear to be most likely?

I would imagine that Rolex would guard their exact percentage of elements a secret but it would be nice to at least inform us what metals are in this gold composition in case some elements may cause an allergy. Imagine spending big money on a gold watch that you may not be able to wear!!! It is at least nice of them to inform us that in their steel versions they use 904L which tells us the elements in it for those that are worried about if this stainless steel is appropriate for them