I have a grenat city from BalNY - mine is also similar. If you do a search for "white edges" on this board, you will see that others have also had this question. At first, I thought it was specific to grenat, but I pored over many, many B-bag pics, and I have seen quite a few bags with this issue. At one point, I even had a powerpoint file of all of the pictures to compare them! It is more noticeable on a jewel tone like grenat or bordeaux rather than the lighter colors. When I first got my bag, it bothered me immensely, but I love the leather otherwise so I kept it. As I've used my bag more and more, I don't even notice it any more. To me, the beauty of Balenciaga lies in the distressed, variable nature of the leather. If it bothers you tremendously, you could talk to some handbag repair shops (like Lovin My Bags or the leather shop in NY that several girls here have used) to see if there is something they can do - but I think re-dyeing the bag would be the only thing they could do. I think I read that someone with a black B-bag used a black sharpie to color hers! However, it would be harder to find a marker that matched the grenat exactly. Also, if you look at the edges that have been dyed more thoroughly, the edges are a brighter red than the body of the bag, so either way, you will notice the edges - they will either be white or bright red.
