Nightwish.vim is a project mainly written in Vim Script, it's free.
dark colorscheme
This is a mirror of http://www.vim.org/scripts/script.php?script_id=624
Yet another dark colorscheme. Tried to have a decent mix of all available colors to maximize readability. Should be pretty moderate on eyes. See http://home.arcor.de/muhler/vim.htm for a screenshot.