I bought a black medium leather chain hobo in July this year, shortly after I got it it started to go a funny pinky bronze colour so I took it into Gucci after sales in Bond Street and they said they could fix it, a month later I got the bag back and it was fine. It then did it again so I posted it back to them (I had already paid a train fare to London returning it and then had to pay for special delivery which was about £10) and they again sent it off to fix it. I got it back and it was fine. The manager told me if it happened again he would exchange it. Anyway it has now happened again, not so badly but there are patches on it. I rang him up and he said they will exchange it but not for the same bag!!! He said that it is a problem they know about due to some chemical and that there would be no point me having another one the same as that will do the same thing. I said that people on purseforum have the same bag and theirs haven't done it but he stayed firm and said he wouldn't change it. I don't know what to do, I love the bag and there are no other bags on the Gucci site I like plus I don't want to have to pay extra. I don't know whether to just keep mine as it is not that bad but then it might get worse and I will have lost the chance to change it. Has anyone else's bag done this? What should I do? Is there any way I can make him give me another one? I am so stressing!!!