anychart.onDocumentReady(function () {
var chart = anychart.area();
var series = chart.splineArea([
{x: "January", value: 5},
{x: "February", value: 6},
series.selectFill(["#263238", "#FFFFFF"], 45, true, 0.5);
chart.title("Set select fill as a linear gradient");
chart.container("container");