At this address :
http://orgmode.org/worg/org-tutorials/org-appearance.php#sec-2
in the "Org-mode ready color-themes" section, the link doesn't work because
it is pointing to
file:///home/cdominik/Private/Dropbox/Worg/org-color-themes.php

I think it's an error , right?

Hopping it may help
Thank you