Jetpack Compose version: 1.3.0-beta02 Jetpack Compose component used: androidx.compose.material3:material3:1.0.0-beta02

I have an use case where I need to make TopAppBar opacity = 0.5 so it shows the contents of a scrollable content behind it, I use it like:

TopAppBar(
    ...
    colors = TopAppBarDefaults.smallTopAppBarColors(containerColor = MaterialTheme.colorScheme.surface.copy(alpha = TopAndBottomBarsAlpha))
)

This commit https://android.googlesource.com/platform/frameworks/support/+/bbff03e04bfcd25914cfff15692a1ab76d0f0fdd makes the changes below:

-    Surface(modifier = modifier.then(appBarDragModifier), color = appBarContainerColor) {
+    Surface(modifier = modifier.then(appBarDragModifier)) {

and it makes it impossible to accomplish the transparency as the Surface will use the default color = MaterialTheme.colorScheme.surface.