air-vision : Grub2 GFX theme Air Vision ( http://kde-look.org/content/show.php?content=169426 )
archxion : Grub2 GFX theme Archxion ( https://github.com/Generator/Grub2-themes )
ask-larry : Grub2 GFX theme ask-larry ( https://github.com/vitalogy/grub2-theme-ask-larry )
axiom : Grub2 GFX theme Axiom ( http://gnome-look.org/content/show.php/Axiom+Grub+2+Theme?content=146396 )
chakra-dharma : Grub2 GFX theme Dharma of the Chakra project ( http://malcer.deviantart.com/art/Dharma-GRUB2-theme-323177583 )
cmoh-gentoo : Gentoo Grub2 GFX theme by CMoH ( https://github.com/CMoH/grub2-theme-gentoo )
deepin : Grub2 GFX theme Deepin ( https://github.com/linuxdeepin/deepin-grub2-themes )
denix : Grub2 GFX theme for DeniX OS ( https://github.com/denix666/denix-grub2-theme )
eternity : Grub2 GFX theme Eternity ( http://kde-look.org/content/show.php?content=168508 )
fagiada-bue : Grub2 GFX theme Fagiada Bue ( https://github.com/scaamanho/FagiadaBue )
grOS : Grub2 GFX theme grOS ( https://github.com/grOS-TEAM/grOS-Grub2-Themes )
grau : Grub2 GFX theme Grau ( http://gnome-look.org/content/show.php/Grau+GRUB+Theme?content=158610 )
gutsblack-archlinux : Grub2 GFX theme Archlinux by Gutsblack ( https://forums.archlinux.fr/viewtopic.php?t=11361 )
huayra-limbo : Grub2 GFX theme Huayra Limbo ( https://github.com/HuayraLinux/huayra-grub-themes )
journey : Grub2 GFX theme Journey ( http://lazybrowndog.net/debian/wheezy/journey/grub.html )
openSUSE : Grub2 GFX theme openSUSE ( https://github.com/openSUSE/branding )
rosa : Grub2 GFX theme of ROSA Linux ( http://wiki.rosalab.com/en/index.php/Main_Page )
steam-big-picture : Grub2 GFX theme Steam Big Picture ( https://github.com/LegendaryBibo/Steam-Big-Picture-Grub-Theme )
ubuntu-mate : Grub2 GFX theme ubuntu-mate ( https://github.com/nadrimajstor/grub2-themes-ubuntu-mate )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a grub2-themes
For Paludis use this rsync : rsync://gentoo.zugaina.org/grub2-themes-portage
If you have a problem : ycarus(-at-)zugaina.org