I think that, like how males are shown in Blue, and females are shown in Pink, Hermaphrodites should in their in color. Also Miscarriages and Stillborn and maybe Illegitament and Legitament Children should have their own colour or symbol aswell, Kings and Queens should have crowns and Knights should have swords. And Family Creasts should be added too.
you should post your ideas at
Still the option of both genders is a better idea; their gender isnt unknown, its both. Unknown is for people whos gender you dont know, like for example if you had an ancestor with a sibling named Jessie, if Jessie's middle name was Charles then Jessie would be male, but if Jessies middle names was Fiona then Jessie would be female, but if Jessies gender wasnt recorded and Jessie had no middle name, spouse and anything to verify his/her gender then Jessie would be recorded Unknown Gender. Hermaphrodites should be both Blue or Pink, not Green, or maybe Purple or anything other then Blue, Pink or Green.