In review of the situation:
Both PG and NONPG are involved
There is no single flavor or group of flavors that stands out.
Storage methods are varied
There is at least one report of an "unopened" bottle involved
There is only one common involved so far.
My theory is that THE SAMPLE SET BOTTLES themselves are the fault.
Anyone with certain discoloration other than the sample sets reply..
Both PG and NONPG are involved
There is no single flavor or group of flavors that stands out.
Storage methods are varied
There is at least one report of an "unopened" bottle involved
There is only one common involved so far.
My theory is that THE SAMPLE SET BOTTLES themselves are the fault.
Anyone with certain discoloration other than the sample sets reply..