public ObjectProperty<Color> backgroundColorProperty() {
        if (null == backgroundColor) {
            backgroundColor = new ObjectPropertyBase<Color>(_backgroundColor) {
                @Override protected void invalidated() { redraw(); }
                @Override public Object getBean() { return SunburstChart.this; }
                @Override public String getName() { return "backgroundColor"; }
            };
            _backgroundColor = null;
        }
        return backgroundColor;
    }
Defines the color that will be used to fill the background of the chart
@param COLOR
src/main/java/eu/hansolo/tilesfx/chart/SunburstChart.java