Chartjs-plugin:如何为每个标签添加不同的颜色？

<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-colorschemes"></script>

<canvas id="myChart"></canvas>

var ctx = document.getElementById('myChart').getContext('2d');
var myChart = new Chart(ctx, {
    type: 'bar',
    data: {
        labels: ['标签1', '标签2', '标签3', '标签4'],
        datasets: [{
            label: '数据集',
            data: [10, 20, 30, 40],
            backgroundColor: Chart.helpers.colorScheme('brewer.Paired12').colors,
            borderColor: 'rgba(0, 0, 0, 0.2)',
            borderWidth: 1
        }]
    },
    options: {
        plugins: {
            colorschemes: {
                scheme: 'brewer.Paired12'
            }
        }
    }
});