Xemacs-colorscheme is a project mainly written in Vim Script, it's free.
Vim with xemacs-like colors
This is a mirror of http://www.vim.org/scripts/script.php?script_id=307
Copy it to your $HOME/.vim/colors and do a :colorscheme xemacs from within vim. I've tried to mimic xemacs colors as best as I could, but suggestions would be very much welcome.