How to customize ion-radio default icon

Hi there, the default ion-radio is a check sign, I want to change to another icon like a round check with background color. so what should I change,

Go <ion-radio [color]=“myColor” value=“go” (ionSelect)=“toggleColor()”>

then declare myColor:

myColor: string = ‘secondary’;

and the function:

toggleColor() { this.myColor = ‘danger’; }

hi thanks for reply, but this is change color, I’m looking for change icon. thanks