I have a Chacom pipe made for Iwan Ries, but stamped Chacom, a green stain smooth straight billiard, that has held its color nicely for the three years I've had it. I also have a EWA group two churchwarden in a green stain that also has held up over several years. I think staining pipes is a very specialized skill, and perhaps the long generations of pipe makers at St. Claude, France, know how to do that pretty well. But stain is tricky and I readily believe that the wrong stain, or the wrong application of it, can easily brown or gray out rapidly.