Twilight is a project mainly written in Vim Script, it's free.
A clone of Textmates twilight scheme
This is a mirror of http://www.vim.org/scripts/script.php?script_id=1677
A dark scheme, with golden and blueish script. This is just a first try, there may be lots of things missing or wrong.
See http://leetless.de/vim.html for a screenshot.