0rava, your updates are pretty amazing. I wanna thank you for making this game, it rocks. Whenever i'm stressed, i play this game. Whenever i'm bored, i play this game. No seriously, this game rocks. Thank you.
Custom items can't be modified like normal items can. They essentially work like level saves behind the scenes, which makes properties+skinning not possible.
 "Mutilate-a-Doll 2"){kind=icon}
 "Forbidden Arms"){kind=icon}
See forums for MaD November announcement.