Editor green on dark background theme

 Hi,

Finding Rubymine to be a very useful tool. In the past I have mainly used Emacs as my editor of choice. One thing that I find that I miss from Emacs is the Dark green editor themes such as Calm Forest and Green Screen. I can not seem to be able to find anything similar for Rubymine, including http://color-themes.com/. Is there such a theme already created, or failing that a good guide to creating a color theme?

Thank you