Good Morning, I own a flea bitten Appendix mare and she loves to roll in the mud and dirt, I have a heck of a time keeping her clean. I this normal for grey horses? In the past I have owned darker colored horses and they rolled yes, but didn't try to keep themselves covered in mud! I always say she wants to be a paint at heart and is giving herself the paint coloring. Posted a picture of her clean and dirty. And in spring and fall she looks more like the dirty picture even though I brush her everyday! (sometimes twice a day)