[Chartjs]-Adding different point style to each column from parsed csv in chart.js

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You are now telling each dataset that the colors it has to use is an array of 3 collors so it will do so, like you said if you only want one color you just need to pass that one collor like so:

var datasets = [];
const colors = ["#3e95cd", "#8e5ea2", "#c45850"];

for (var i = 1; i < data[0].length; i++) {
  datasets.push({
    label: data[0][i], // column name
    data: data.slice(1).map(function(row) {
      return row[i]
    }), // data in that column
    fill: false, // `true` for area charts, `false` for regular line charts
    borderColor: colors[i],
    borderWidth: "2",
    pointRadius: '0',
    pointStyle: "rectRot"
  })
}

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