How to change the colour of primfaces Axis?

Question

How can I change the colour of primefaces Axis? I don't see any default colour and I have no idea how to change it.

    public LineChartModel getLineChartModel() {
    LineChartModel model = new LineChartModel();
    model.addSeries(getData());;
    model.setTitle(televotingQuestion.getQuestion());
    model.setSeriesColors("black");
    Axis yAxis = model.getAxis(AxisType.Y);
    yAxis.setMin(0);
    yAxis.setTickInterval("1");
    yAxis.setLabel("Anzahl");
    Axis xAxis = model.getAxis(AxisType.X);
    xAxis.setMin(televotingQuestion.getMinValue());
    xAxis.setMax(televotingQuestion.getMaxValue());
    xAxis.setTickInterval("100");
    return model;
}
<p:chart id="votes" type="line" model="#{televotingNumericManagementBean.lineChartModel}" style="height:700px;"/>

Answer 1

my extender:

<script>

        function colorAxes() {
            this.cfg.axes.yaxis.tickOptions = {
                textColor : '#ffffff'
            };
            this.cfg.axes.yaxis.labelOptions  = {
                textColor : '#ffffff'
            };
            this.cfg.axes.xaxis.tickOptions = {
                textColor: '#ffffff'
            };
        }
    </script>

and that's how I used it in my bean:

  LineChartModel model = new LineChartModel();
    model.addSeries(getData());;
    model.setTitle(televotingQuestion.getQuestion());
    model.setSeriesColors("black");
    model.setExtender("colorAxes");