This was created to be used as an KDE colorscheme to make KDE applications look more native under GNOME.
-Extract the archive
-Open KDE systemsettings
-Colors > Scheme > Import Scheme... > choose "Natty_Ambiance"
While on the left side you can see a KDE application on Ubuntu 11.04 on the left side there has been applied this colorscheme plus more changes to make the application look more native.
Inspired by http://kde-look.org/content/show.php/Ambiance?content=123960