Well at first I dismissed Silverdagger's comment, but he may have a point. I have never had a knife with with the dye come off. Even Chinese knvies from years ago, or Pakistain knives. That is highly unusual to say the least. Maybe someone else can chime in.
It happened to me with an AG Russel knife. I've read about it happening to others with various knives as well. The best explanation I've heard is that the handles were over saturated with dye. That did seem to be the issue with mine.
Leo