fadeHighlightColor  
  fun PlaceholderDefaults.fadeHighlightColor(backgroundColor: Color = MaterialTheme.colorScheme.surface, alpha: Float = 0.3f): Color(source)
Returns the value used as the the highlightColor parameter value of PlaceholderHighlight.Companion.fade.
Parameters
backgroundColor 
The current background color of the layout. Defaults to MaterialTheme.colorScheme.surface.
alpha
The alpha component to set on backgroundColor. Defaults to 0.3f.