javascript - Why are the default Chart.js legend boxes transparent rectangles? -


why default chart.js legend boxes transparent rectangles these:

enter image description here

how make them solid squares these instead? i've looked through http://www.chartjs.org/docs/latest/configuration/legend.html can't find relevant.

enter image description here

https://jsfiddle.net/askhflajsf/7yped1d5/ (uses latest master branch build)

var barchartdata = {    labels: ["2013-03-09", "2013-03-16", "2013-03-23", "2013-03-30", "2013-04-06"],    datasets: [{      bordercolor: "#3e95cd",      data: [10943, 29649, 6444, 2330, 36694],      fill: false,      borderwidth: 2    },    {      bordercolor: "#ff3300",      data: [9283, 1251, 6416, 2374, 9182],      fill: false,      borderwidth: 2    }]  };    chart.defaults.global.defaultfontfamily = "'comic sans ms'";  // disable pointers  chart.defaults.global.elements.point.radius = 0;  chart.defaults.global.elements.point.hoverradius = 0;    var ctx = document.getelementbyid("bar-chart").getcontext("2d");  new chart(ctx, {    type: 'line',    data: barchartdata,    options: {      responsive: true,      legend: {        display: true,        position: "right"      },      title: {        display: false      },      scales: {        xaxes: [{          type: "time",          ticks: {            minrotation: 90          }        }]      }    }  });
<script src="http://www.chartjs.org/dist/master/chart.bundle.min.js"></script>  <canvas id="bar-chart"></canvas>

this because haven't set backgroundcolor property datasets (which responsible legend­'s fill color).

datasets: [{    backgroundcolor: "#3e95cd",    bordercolor: "#3e95cd",    data: [10943, 29649, 6444, 2330, 36694],    fill: false,    borderwidth: 2 }, {    backgroundcolor: "#ff3300",    bordercolor: "#ff3300",    data: [9283, 1251, 6416, 2374, 9182],    fill: false,    borderwidth: 2 }]

ᴡᴏʀᴋɪɴɢ ᴇxᴀᴍᴘʟᴇ ⧩

var barchartdata = {     labels: ["2013-03-09", "2013-03-16", "2013-03-23", "2013-03-30", "2013-04-06"],     datasets: [{        backgroundcolor: "#3e95cd",        bordercolor: "#3e95cd",        data: [10943, 29649, 6444, 2330, 36694],        fill: false,        borderwidth: 2     }, {        backgroundcolor: "#ff3300",        bordercolor: "#ff3300",        data: [9283, 1251, 6416, 2374, 9182],        fill: false,        borderwidth: 2     }]  };    chart.defaults.global.defaultfontfamily = "'comic sans ms'";  // disable pointers  chart.defaults.global.elements.point.radius = 0;  chart.defaults.global.elements.point.hoverradius = 0;    var ctx = document.getelementbyid("bar-chart").getcontext("2d");  new chart(ctx, {     type: 'line',     data: barchartdata,     options: {        responsive: true,        legend: {           display: true,           position: "right"        },        title: {           display: false        },        scales: {           xaxes: [{              type: "time",              ticks: {                 minrotation: 90              }           }]        }     }  });
<script src="http://www.chartjs.org/dist/master/chart.bundle.min.js"></script>  <canvas id="bar-chart"></canvas>


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