If you get the elk or deer skin, they can be washed easily. Use a mild soap and warm water and they come out really nice. Some of the natural colors still release some of the tanning but usually not at all. For some of the higher end types they use a two thin layer approach so you can have a dark color outside but natural skin next to your own.
Saddle or western wear shops probably have a few contact to get custom gloves made, they are worth every penny and last far longer than most store bought items. I had a set made and they put think extra layers on the palm and finger tips. Those are replaceable when worn. They cost me $250 but lasted many time longer than any other gloves I've had so well worth it. They were made by a lady who had a baseball glove shop and she's no longer in business so those kinds of little shops can probably made a set where you live.
Good luck in finding something that works for you. Now, if I could only find boots that were as comfortable as sneakers but robust enough for riding I'd be all set.