When I started working with my mare when she was two, she was a dark steel grey with gorgeous dapples, and a jet black mane and tail. She's now 6, and when I kept her at our previous barn, I had no control of when she went out, so she was usually out during the day, which bleached her. When she's clean, her coat is now very close to white with flea-bitten spots, and an almost black mane and tale. I really liked her dapples, and I have now moved barns and am keeping her in during the day and out at night to hopefully slow down the sun bleaching. Is there anything I can do to darken her coat up again? Or is this just a natural process she is going to go through? She has black skin and was born black, then faded to chestnut then turned grey.