This looks to me less like missing dye and more like leather wear along a seam. While Hermes can almost certainly touch up the color, I wonder if it wil not recur, as this may be a function of the unique way this bag moves while in use.
If I may make a comment--directed at NO particular poster, but intended only as a general observation (this is my particular hobby horse; feel free to ignore me while I ride it for a moment

): I am often surprised by the intensive attention and distress expressed at relative minutiae in the appearance of Hermes products. While I absolutely support the right of anyone paying Hermes prices to demand whatever level of perfection they wish, these are ultimately functional objects, composed of organic materials and made at least partially by hand. Total uniformity of color, texture, and cut can best be achieved by using synthetic materials assembled by computer-assisted machines, but that is not what Hermes is about.
By all means, if a defect in an Hermes item troubles the buyer, he or she should take whatever corrective action seems appropriate, but I really hope that at least occasionally, minor blemishes and irregularities can be embraced as an inevitable component of these OOAK pieces.
We now return to our normal programming.