I have a script that generates a log file with ANSI color codes in them like so:
[2012-05-14 18:00:02] ^[[0mINF: -- Starting update script --^[[0m [2012-05-1
Use Charles Campbell's (Dr Chip) AnsiEsc plugin:
http://www.vim.org/scripts/script.php?script_id=302
Before:
:AnsiEsc