d alpha for #rrggbbaa
                }
              ],
            };
            const options = {
              scales: {
                xAxes: [
                  {
                    scaleLabel: {
                      display: true,
                      labelString: 'commit',
                    },
                  }
                ],
                yAxes: [
                  {
                    scaleLabel: {
                      display: true,
                      labelString: dataset.leng