alfresco-ng2-components/lib/core/styles/snackbar.scss

@mixin adf-snackbar-theme($theme) {
    $warn: map-get($theme, warn);
    $accent: map-get($theme, accent);
    $primary: map-get($theme, primary);

    .adf-error-snackbar {
      background-color: mat-color($warn);

      .mat-simple-snackbar-action {
        color: white;
      }
    }

    .adf-warning-snackbar {
      background-color: mat-color($accent);

      .mat-simple-snackbar-action {
        color: white;
      }
    }

    .adf-info-snackbar {
      background-color: mat-color($primary);

      .mat-simple-snackbar-action {
        color: white;
      }
    }
  }