I treated my tan leather motorcycle jacket entirely with Neatsfoot Oil to condition and darken it.
The transition was from a very light tan dry leather to a rich honey colored leather which looks very desirable. If you don’t want your leather to darken do not use Neatsfoot Oil.
Here is how it turned out:
I like the jacket! Any info on it?
Unfortunately no. I think it was a custom jacket. I bought it on Etsy.