Change Chart.js plugin

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js"></script>
<canvas id="myChart" height="150"></canvas>

JavaScript

var chartColors = {
  red: 'rgb(255, 99, 132)',
  blue: 'rgb(54, 162, 235)'
};

var myChart = new Chart(document.getElementById("myChart"), {
  type: 'pie',
  responsive: true,
  maintainAspectRatio: false,
  data: {
    labels: ["Label 1", "Label 2"],
    datasets: [{
      backgroundColor: [chartColors.red, chartColors.blue],
      data: [4, 7],
      hoverBorderWidth: 5,
      borderColor: 'transparent',
    }]
  },
  options: {
    title: {
      display: true,
      text: 'Chart Title',
    },
    legend: {
      display: true,
      position: 'bottom',
      fullWidth: false,
      onClick: () => {},
      labels: {
        //   generateLabels: (chart) => {
        //      return pieOptions.legendLeft(chart);
        //    }
      }
    },
    rotation: 3.9,
  },
  plugins: [{
    beforeInit: function(chart, options) {
      console.log('yolo');
    }
  }]
});