2๐
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You need to add colors for each label in datasets
'datasets'=> [{
'label' => 'level',
'data' => [10,20,30,40],
backgroundColor: [
'rgba(75, 192, 192, 0.2)', // green
'rgba(255, 206, 86, 0.2)', // yellow
'rgba(54, 162, 235, 0.2)', // blue
'rgba(255, 99, 132, 0.2)', // red
],
}]
Check this link for more options http://www.chartjs.org/docs/latest/
2๐
you should add the cooresponding color
'datasets' => [
[
'label' => 'level',
'data' => [10,20,30,40],
'backgroundColor' => ["green", "yellow","blue" ,"red"],
],
Source:stackexchange.com