I don't 'love' it at all, but in the case of my Triumph Thruxton R, I accept it. It's just what they do. My W800 is a different matter, the header pipes are not supposed to discolor. I've owned many motorcycles with double-walled chrome steel exhaust headers. None, that I can recall, developed discoloured header pipes. It's not the end of the world, and can probably be managed with a little work. If not, I'll try to get it warrantied.