I wanted a color-theme that would go well with Ubuntu's Radiance theme. The great majority of colors are from Ubuntu colour palette and colour landscapes document.
Put it in your desired directory. Make sure custom-theme-directory is set to point to it and then just add:
(load-theme 'radiance)
to your emacs init file.
elisp
Contributions are very welcome! Try to use Ubuntu/Canonical colors where possible but it's not mandatory. People edit all sorts of languages with Emacs and I can't check them all to see how they work so if yours is not looking nice, please create an issue or a pull request.