выпуск https://github.com/jtblin/angular-chart.js/issues/696
решил мою проблему
colors: [
{
backgroundColor: '#A2DED0',
borderColor: '#A2DED0',
hoverBackgroundColor: '#A2DED0',
hoverBorderColor: '#A2DED0'
},
{
backgroundColor: '#65C6BB',
borderColor: '#65C6BB',
hoverBackgroundColor: '#65C6BB',
hoverBorderColor: '#65C6BB'
},
{
backgroundColor: '#1BBC9B',
borderColor: '#1BBC9B',
hoverBackgroundColor: '#1BBC9B',
hoverBorderColor: '#1BBC9B'
}
]