Change color of primeng input-switch

I have the following p-inputSwitch.

<p-inputSwitch class="ml-1 mr-1 align-middle"
               (onChange)="setDefaultValues($event)"
               [ngModel]="defaultValuesToggle">
</p-inputSwitch>
           

Is there a way to change the color from blue when selected? I have tried the following, but nothing changes the color:

.p-inputswitch {
    background: red !important;
}
.p-inputswitch .p-inputswitch-slider {
  background: red !important;
}