There are two type of hair in the program, the Hair Preset is usually pre-colored, which can be colored further, but obviously the precolored parts can’t really be altered. On the other hand, the simple Hair category mostly uses the shades of grey, so can be colored to any color you want. If an item is already dark, it won’t be colored as much as the “light” items, but we’ve had this discussion a few months earlier. 🙂