This is a mirror of http://www.vim.org/scripts/script.php?script_id=1024

Tabs and spaces are colored in slightly different colors from lightest to
darkest for dark background or from darkest to lightest for light background
example (x is darkest color and z lightest):

    function foo()
    x if b
    x y echo &#039something&#039
    x y while c
    x y z echo &#039something else&#039
    x y endwhile
    x endif
    endfunction
    
Actually it forms vertical stripes

You can switch it off and on by 
   :call OnOffIndentHi()