I need some guidance on deerskin.

[SUP]

I would like to make a deerskin vest or jacket. 

For that I need deerskin, which I need to purchase.

The thing is, I received free deerskins some time ago and used one of them to make moccasins, which I have been using daily. They get dirty and I wash them, saddle soap and a scrub and rinse under the kitchen tap, then squeeze gently and allow to dry. Then wear again. They don't shrink or wrinkle or dry out. I conditioned them once with the Chemical guy conditioner and never since then. They are soft and comfortable and going strong. They are clearly chrome-tanned, the gold color one sees so much of. 

I want similar deerskins for my jacket. When I look online though, all I see is that deerskin should not be washed, certainly not like I wash my moccasins, and then loads of information on how to clean buckskin and deerskin, all saying, "DON"T WASH". 

I got another deer-skin, also clearly chrome tanned - it is a light mocha in color, in another lot, and that does not take to water well. It does what everyone says happens - darkens, stiffens and the color change is permanent. Luckily I tried it on a small cut-out piece, so the entire thing is not damaged.

So my question is, can anyone guide me on how to select deerskins that are like those of my moccasins and not the  mocha one?

I have been searching online and cannot find information on that. Deerskin is too expensive to do a 'trial and error'.