rule 34 ai generated anus artist request ass blue eyes blush clothing digital media artwork dock equid equine feral feral only friendship is magic fur grey body grey fur hair hasbro horn inner ear fluff legwear mammal mane milf multicolored hair multicolored tail my little pony purple hair purple tail pussy solo stable diffusion stockings tail twilight velvet mlp two tone hair two tone tail unicorn white hair white tail 8233503