I have a perfectly good Neverfull MM in Mono that I love but the vachetta is now very caramel colored and even has very dark brown areas at the very top of the handle. For this reason, I am constantly wondering if I should sell it and get a brand new one but I am torn because it is otherwise in good condition and it is much more expensive now than when I bought mine and would only be able to sell it for maybe a third of the price of a new one. If I wanted a different style I would probably have sold it already but I really want the same bag so it seems sort of silly. I don't think the very dark areas are dirt (and I would be scared to try to clean it anyways). Do any of you sell your bags when the vachetta gets dark/spotty? How dark does it have to get before you sell? Thanks for your help!