.form-check-input:checked {
    background-color: #4bb543;
    border-color: black;
}

.form-switch .form-check-input {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='green'/%3e%3c/svg%3e");
}
.form-switch .form-check-input:focus {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='white'/%3e%3c/svg%3e");
}