It's difficult to prevent color bleeding into white FRN when molding and getting a pure white blend in the first place (same goes for G10). It'll discolor easily due to anything from UV, grease, and skin oils, to the dye in your jeans, and dirt from use.
Sure, it looks nice and I agree it does (I like my white FRN Dragonfly and Delica a lot).
But Spyderco is about functionality before the pretty-factor.
A better option would be white or ivory micarta; which I'd definitely prefer above FRN and G10, is more durable, and doesn't pick up color as easily.
(probably won't happen anytime soon on larger models due to the current lightweight trend though)
A tiger has claws,
A wolf has teeth,
An eagle has talons.
We, have Spyderco.
Grails: Abalone Mini Mariner
, Ti ATR, WTC, Ti Lum Tanto