Leaf the red is rust..depending on where you live it may happen really fast on its own or if you live in a dry area you can speed the process with agents. Salt water will speed rust. as will bleach, So will acids such as muriatic for pools. Basically if you have some pieces of scrap that are the same steel and have been heat treated the same. remove all oil from the piece. Wet them and let dry. Rub with fine steel wool and water and see if it what you want. I would suggest salt and water as you will likely have some and it is not hard on tissues like lungs and skin. You may have to repeat the process a lot of times to make it reddish brown. It is a cool almost antique look when done right. But not what I would call bright red. Have fun |