A Vim Plugin that assigns each pair of parentheses a different colour, depending on its relative placement — makes code with lots of nested brackets etc. a lot easier to read :)
It is packages in a VimBall.
P.S. name of package is not a typo from my side.
According to http://www.vim.org/scripts/script.php?script_id=1561, there hasn't been an update for this package since 2007. Let's close this bug.