I think the Linux Mint forum and website colours are very relaxing and confortable for the eyes. I can spend hours on the forum without any issues or headaches unlike other wesbsite and for that I suggest a green GTK theme for Linux Mint with the Mint forum colours and patterns. Something that matches this Cinnamon theme I made here http://cinnamon-spices.linuxmint.com/themes/view/255. I think this would give Linux Mint a unique identity and sets it apart from OSX and Windows.
there a similar theme here http://gnome-look.org/content/show.php/?content=156189 It is called Zoncolor Green
Promote and comment here if you agree http://community.linuxmint.com/idea/save