yup, and not just that. it really depends on how well you take care of the bag. i've seen some really old vernis bags that have absolutely zero discoloration b/c it was stored correctly.
In some cases that might help but my friend had a silver Lexington that she barely ever used, was stored in a humdity free area in just the dustbag and the glue discolored to the point where it was yellowed. ush:
Oh my...seems like Vernis is not that gd after all.