How do I change the color for ng2-charts?

Also you can do it in this way:

<base-chart class="chart"
            [colors]="chartColors"
            ...
</base-chart>

and

public chartColors: any[] = [
      { 
        backgroundColor:["#FF7360", "#6FC8CE", "#FAFFF2", "#FFFCC4", "#B9E8E0"] 
      }];