Yea see... It can't be too difficult to give you all the color options of highlights/hair color for the tip of your tail. They are already available, the colors could just be enabled to use with things like tip of tail as well. Also more interesting markings for seeker of the sun instead of american football player lines... But that might be more difficult to do.

Make up (eye liner/some lip color) would be nice as well.... Men will probably not like that but hey, more options is nice ^^