Ion-segment change activated background

I am trying to style ion-segment and want to change background that appears for a second when user touch ion-segment buttons. See the image:
segment

I have tried so far the following options:

  ion-segment-button {
    --background-activated: tranparent;
    background: transparent;
  }
  .segment-button-activated {
    background: transparent;
    --background-activated: tranparent;
  }
  .segment-button-checked {
    background: transparent;
    --background-activated: tranparent;
  }

But nothing actually works.
Can please somebody help to find the right way to achieve it in CSS