elementary-icons-theme : An original set of vector icons designed specifically for elementary OS ( https://github.com/elementary/icons )
elementary-sound-theme : A set of system sounds for elementary OS ( https://github.com/elementary/sound-theme )
elementary-theme : The Gtk+ Stylesheet for elementary OS ( https://github.com/elementary/stylesheet )
elementary-wallpapers : Wallpapers for elementary OS ( https://github.com/elementary/wallpapers )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a elementary
For Paludis use this rsync : rsync://gentoo.zugaina.org/elementary-portage
If you have a problem : ycarus(-at-)zugaina.org