private void startRegularThumbAnimator() {
    if (myDisposed || isMacOverlayScrollbar()) return;

    myThumbFadeAnimator.reset();
    if (scrollbar != null && scrollbar.getValueIsAdjusting() || myMouseIsOverThumb || Registry.is("ui.no.bangs.and.whistles")) {
      myThumbFadeAnimator.suspend();
      myThumbFadeColorShift = getAnimationColorShift();
    }
    else {
      myThumbFadeAnimator.resume();
    }
  }
private void startRegularThumbAnimator()