html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

    var chart = anychart.gauges.circular([{value: 7.5}]);

    chart.axis();

    chart.needle();

​

    // Get background.

    var background = chart.background();

​

    background.stroke('3 #7fff00');

    background.corners(10);

    background.fill({

        keys: [

            '#40E0D0 0.2',

            '#FF8C00',

            '#FF0080 0.2'

        ],

        angle: -90

    });

​

    chart.title('Get and modify background');

    chart.container('container');

    chart.draw();

});