chart.jsSet line chart point color

new Chart('chart', {
  // ...
  data: {
    datasets: [{ data: [1, 2, 3], backgroundColor: 'rgba(10, 194, 130, 0.5)' }]
  }
});ctrl + cgithub

`'chart'` id of `canvas` element	`data: [1, 2, 3]` example dataset
`backgroundColor: 'rgba(10, 194, 130, 0.5)'` set point color to semi-transparent green