libs/barista-components/chart/src/heatfield/_chart-heatfield-theme.scss
:host {
  --dt-chart-heatfield-default-color: var(--dt-theme-main-default-color);
  --dt-chart-heatfield-hover-color: var(--dt-theme-main-hover-color);
  --dt-chart-heatfield-active-color: var(--dt-theme-main-active-color);
  --dt-chart-heatfield-background-color: var(--dt-theme-main-background-color);
}

:host.dt-color-error {
  --dt-chart-heatfield-default-color: var(--dt-error-default-color);
  --dt-chart-heatfield-hover-color: var(--dt-error-hover-color);
  --dt-chart-heatfield-active-color: var(--dt-error-active-color);
  --dt-chart-heatfield-background-color: var(
    --dt-error-active-background-color
  );
}

.dt-chart-heatfield-marker {
  background-color: var(--dt-chart-heatfield-default-color);
}
.dt-chart-heatfield-marker.dt-chart-heatfield-active {
  background-color: var(--dt-chart-heatfield-active-color);
}

.dt-chart-heatfield-marker:hover,
.dt-chart-heatfield-marker:focus {
  background-color: var(--dt-chart-heatfield-hover-color);
}

.dt-chart-heatfield-backdrop {
  background-color: var(--dt-chart-heatfield-background-color);
}
