Twin directories of themes:

[DIR]  ftp://ftp.dit.upm.es/linux/mirrors/ftp.gnome.org/teams/art.gnome.org/themes/
[DIR]  ftp://ftp.dit.upm.es/linux/mirrors/ftp.gnome.org/teams/art.gnome.org/archive/themes/
[DIR]  ftp://ftp.eutelia.it/pub/Sunsite_Mirror/X11/gtk/themes/
[DIR]  ftp://ftp.eutelia.it/pub/Sunsite_Mirror/X11/gtkbuffet/apps/replay/themes/
[DIR]  ftp://ftp.eutelia.it/pub/Sunsite_Mirror/X11/kde-apps/themes/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors/ftp.kde.org/pub/kde/stable/apps/KDE2.x/themes/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors/ftp.kde.org/pub/kde/stable/apps/KDE3.x/themes/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors/ftp.kde.org/pub/kde/stable/apps/KDE4.x/themes/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors/ftp.kde.org/pub/kde/unstable/apps/KDE1.x/themes/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors/ftp.kde.org/pub/kde/unstable/apps/KDE2.x/themes/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors/ftp.kde.org/pub/kde/unstable/apps/KDE3.x/themes/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors/ftp.kde.org/pub/kde/unstable/apps/KDE4.x/themes/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/macros/latex/contrib/beamer/themes/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/macros/latex/contrib/beamer-contrib/themes/
[DIR]  ftp://ftp.sdsmt.edu/pub/choralnet/repertory/themes/
[DIR]  ftp://ftp.ema.fr/pub/mirrors/mandrake/9.0/i586/Mandrake/mdkinst/usr/lib/gtk/themes/
[DIR]  ftp://ftp.ema.fr/pub/mirrors/mandrake/9.0/i586/Mandrake/mdkinst/usr/share/gtk/themes/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/themes/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/themes/images/shots/themes/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/kde/stable/apps/KDE2.x/themes/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/kde/stable/apps/KDE3.x/themes/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/AfterStep/themes/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/Enlightenment/enlightenment/themes/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/Enlightenment/themes/
[DIR]  ftp://ftp.kreonet.re.kr/tools/X11/WindowMaker/contrib/themes/
[DIR]  ftp://ftp.kreonet.re.kr/CTAN/macros/latex/contrib/beamer/themes/
[DIR]  ftp://ftp.kreonet.re.kr/CTAN/macros/latex/contrib/beamer-contrib/themes/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/software/gcc/wikidata/themes/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/bombermaze/themes/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/epiwm/images/themes/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/epiwm/themes/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/francine/themes/
[DIR]  ftp://ftp.kreonet.re.kr/gnu/ibiblio/www/savannah-checkouts/non-gnu/gnomoradio/blog/themes/
[DIR]  ftp://ftp.denet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winnt/themes/
[DIR]  ftp://ftp.denet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winxp/themes/
[DIR]  ftp://ftp.denet.dk/mirrors/ftp.simtel.net/pub/simtelnet/handheld/handheld/themes/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/lib64/gtk/themes/
[DIR]  ftp://ftp.denet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/share/gtk/themes/
[DIR]  ftp://ftp.sektornet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winnt/themes/
[DIR]  ftp://ftp.sektornet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winxp/themes/
[DIR]  ftp://ftp.sektornet.dk/mirrors/ftp.simtel.net/pub/simtelnet/handheld/handheld/themes/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/lib64/gtk/themes/
[DIR]  ftp://ftp.sektornet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/share/gtk/themes/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/lib64/gtk/themes/
[DIR]  ftp://ftp.darenet.dk/mirrors/mandrake/9.0/x86_64/Mandrake/mdkinst/usr/share/gtk/themes/
[DIR]  ftp://ftp.darenet.dk/mirrors/ftp.simtel.net/pub/simtelnet/handheld/handheld/themes/
[DIR]  ftp://ftp.darenet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winnt/themes/
[DIR]  ftp://ftp.darenet.dk/mirrors/ftp.simtel.net/pub/simtelnet/winxp/themes/
[DIR]  ftp://ftp.kde.org/pub/kde/unstable/apps/KDE3.x/themes/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/netscape/netscape6/themes/