jquery_color plugin q (can't remove bg color)

jquery_color plugin q (can't remove bg color)


$('#nav_wrapper').animate({ backgroundColor: '#999' }, 1400 );

to set it back (i.e., remove bg color) I tried:

    $('#nav_wrapper').animate({  backgroundColor: 0  }, 1400 );
    $('#nav_wrapper').animate({ backgroundColor: '0' }, 1400 );
        these give me a bg color of black

and

    $('#nav_wrapper').animate({ backgroundColor: 'none' }, 1400 );
    $('#nav_wrapper').animate({ backgroundColor: '' }, 1400 );     // two quotes (empty string), not double quote
         these give me a bg color of white...

how do I set it to no bg color ???????


thank you.....