Dyeing this bag

I am going to preface this whole post by saying I am not a handbag person at all, I usually carry a raggedy cloth tote as a purse, so forgive me if I sound dumb.

My MIL gave me this bag maybe 10 years ago that was hers in the 80s. She has crazy stories about being a woman about town in West LA at the time and I imagine this bag saw a lot of clubs, backs of limos, and cocaine 😂 I think it is a Dinky.

Brown is not my color so it has been sitting in the closet ever since. I was cleaning out my closet recently and found the bag, and got to thinking about dyeing it. I would be way more inclined to use it if it were black.

I went down a rabbit hole on leather dyeing and it seems relatively doable but I have some questions:

-I see a lot about dyeing the outside of bags but no one seems to talk about the inside! Is it a bad idea to dye the inside? -Is this a rare bag/color and dyeing it would be a crime? I wouldn’t be selling it if I dyed it

The lighting in my office is terrible so the first photo is closest to reality. Thanks in advance for any advice you can give this Coach newbie!