I am a beginner leather worker and I overheard some gentlemen discussing saddles in the local leather store, and one of them was talking about how a few decades ago in California, it was very popular to, when you were done building a saddle, pay some kid 25 cents to rub the leather with olive oil and then leave the saddle in the sun, and they would turn this really pretty deep bright red color. I'd like to know more about this method if anybody has the knowledge. I like details and specific instructions, I'd like to try it on a few small leather pieces or two....thanks!