/vim-css-hex

Highlights hex codes in css files with colors they represent.

css-hex

Plugin for gvim that highlights hex codes with color they represent.

Installation:
Just put css-hex.vim in your .vim/plugin directory. Or better, use pathogen.
Disclaimer:
Based on plugin by Yuri Feldman - http://www.vim.org/scripts/script.php?script_id=2937 - released on WTFPL.
Illustration:
http://github.com/KrzysztofUrban/vim-css-hex/wiki/vim-css-hex.png