Can anyone (preferably Dan) tell me if colored coatings are different than the black coatings (besides color)? I ask because after buffing the edge of my gray S5, I used some lacquer thinner to clean off the buffing compound. While I was wiping it down, I noticed some black/dark gray coming off of the blade, too. I thought it was just dirty compound, so I flipped the paper towel. Still, more black/dark gray stuff. I then tried scraping the coating with my finger nail and it felt a little soft. What kind of coating is on these blades? If it were a baked on epoxy, it seems like lacquer thinner should have had no effect. I've wiped down my black Dog Father with lacquer thinner and never noticed any softening of the coating. Any info about this?