Texas Ranger--
How long have you had your WC faly's? If you have had them for a long time, the idea that the yellow fades on all WC can be disregarded
The recent history of Faly in the wild is complicated and a label alone does not necessarily prove one theory over another. I've read that the area was artificially populated with other locales, which might explain some issues. When did the Faly locale become popular? Do we have source photos from before that date?