jqwidgets-scripts-custom/demos/Angular/chart/customstyling/src/app/app.component.css

jQWidgets is an advanced jQuery, Angular 7, Vue, React, ASP .NET MVC, Custom Elements and HTML5 UI framework.

.jqx-chart-axis-text, .jqx-chart-label-text, .jqx-chart-legend-text, .jqx-chart-axis-description, .jqx-chart-title-text, .jqx-chart-title-description {
  fill: #ffffff;
  color: #ffffff;
}

.myChart div {
  background-repeat: no-repeat;
  background-size: cover;
}