or() {
	return (Math.random() > 0.5 ? 1.0 : -1.0) * Math.round(Math.random() * 100);
}

var color = Chart.helpers.color;
var config = {
	type: 'bar',
	data: {
		labels: [5, 10, 15, 20, 25, 30, 0],
		datasets: [{
			label: 'Dataset 1',
			backgroundColor: chartColors.red,
			borderWidth: 0,
			data: [0, 0, 0, 0, 0, 0, 0].map(function() {
				return randomScalingFactor();
			}),
			shadowOffsetX: 5,
			shadowOffsetY: 5,
			shadowBlur: [5, 10, 15, 20, 25, 30, 0],
			shadowColor: effectColors.shadow
		}, {
			l