Just a question I have for anyone interested. Some of my favorite folders such as my big case toothpick, are gray, not rusted, but through use have turned gray. I like how these knives look especially after sharpenening you know, a brite edge and dark blade. How do you guys feel about letting your kukuris get in this condition. I don't consider this an error in maintenance, but rather a natural process that actually give rust protection to your blade.