On hover bar is overlapped by label chartjs - chart.js

Question

I'm trying to generate a bar graph but after generating when i hover on bar first graph the hover works and tooltip is also coming correctly but when i hover on second or third bar the bar color becomes black
<script src="https://cdn.jsdelivr.net/npm/chart.js#2.8.0"></script>
<canvas id="barChart" style="margin-top:10px"></canvas>
var ctxBarChart = document.getElementById('barChart').getContext('2d');
var chart = new Chart(ctxBarChart, {
// The type of chart we want to create
type: 'bar',
// The data for our dataset
data: {
labels: ['bar 1', 'bar 2', 'bar 3'],
datasets: [{
label: 'bar graph label',
backgroundColor: ['#ff7f27', 'DodgerBlue', 'Green'],
borderColor: ['#ff7f27', 'DodgerBlue', 'Green'],
data: [24.6154, 28.4, 28.4]
}]
},
// Configuration options go here
options: {
legend: {
display: false
},
tooltips: {
callbacks: {
label: function (tooltipItem, data) {
return tooltipItem.yLabel.toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,') + '%';
}
}
},
scales: {
xAxes: [{
gridLines: {
display: false
}
}],
yAxes: [{
gridLines: {
display: false
},
ticks: {
// max: 100,
min: 0,
// stepSize:20
}
}]
}
}
});
but the result i'm getting is like this please see following images for bar 1 and bar 2

Answer 1

This seems to be caused by case-sensitivity of colour names.
Change your colours to all lowercase like so:
backgroundColor: ['#ff7f27', 'dodgerblue', 'green'],
borderColor: ['#ff7f27', 'dodgerblue', 'green'],
The CSS3 specification explicitly states the names are case-insensitive so this looks like a bug in Chart.js