Many beloved jackets that have served one faithfully for many years, look like the first two pics. When sent in for repairs, I frequently hear "I want to keep the patina so don't put anything on it." But, when the top layer of the skin is worn away it deteriorates rather quickly. A jacket in this state, if you don't get moisture into it and apply some care product - you are going to outlive it. The 3rd and 4th photos are what I did to this jacket to keep it in an enjoyable condition. It's still soft and comfy, and it doesn't look brand new. It looks cared for. (We relined it and some other necessary repairs.) So there are various approaches to the application of dyes and care products. To those that want a newly issued look that is one approach. But it isn't the only one.