anychart.onDocumentReady(function () {
var chart = anychart.sparkline([1, 4, 7, 1]);
chart.seriesType('column');
chart.fill([{offset: 0.2, color: '#90caf9', opacity: 0.8}, '#ffcc80']);
chart.title({text: 'Set chart fill parameter as an array', orientation: 'top'});
chart.container('container');