Ionic button color change for specific button


I have multiple button like this

<button id="1" ion-button [color]="btnActive" (click)="btnActivate()">text</button>
<button id="2" ion-button [color]="btnActive" (click)="btnActivate()">text</button>
btnActivate() {
  	//Change this button color atrr

When user click on any button the color change for all buttons. What I want is change the color attribute for the clicked button only or change based on ID of the button.



<button id="1" ion-button [color]="btnActive"(click)="btnActivate($event)">text</button>


btnActivate(event) {'color' ,'blue');