We are using this script to format pivots tables appearence

widget.on("ready", function(w, args) {

//header values
var $ps3 = $(".p-dim-member", element);
$ps3.css('font-size' , '13px');
$ps3.css('font-weight' , 'bold');
$ps3.css('color' , '#5b9bbc');
$ps3.css('text-align' , 'left');

//header columns
var $ps1 = $(".p-grand-total-head,.p-dim-head", element);
$ps1.css('font-size' , '14px');
$ps1.css('font-weight' , 'bold');
$ps1.css('color' , 'white');
$ps1.css('background-color' , '#4B6B9E');
$ps1.css('text-align' , 'center');
$ps1.css('vertical-align' , 'middle');

});

but this script won't work any more, we can't save it