### MaterialExpressiveThemeSample
```kotlin
@OptIn(ExperimentalMaterial3ExpressiveApi::class)
@Preview
@Composable
fun MaterialExpressiveThemeSample() {
    val isDarkTheme = isSystemInDarkTheme()
    val supportsDynamicColor = Build.VERSION.SDK_INT >= Build.VERSION_CODES.S
    val darkColorScheme = darkColorScheme(primary = Color(0xFF66ffc7))
    val colorScheme =
        when {
            supportsDynamicColor && isDarkTheme -> {
                dynamicDarkColorScheme(LocalContext.current)
            }
            supportsDynamicColor && !isDarkTheme -> {
                dynamicLightColorScheme(LocalContext.current)
            }
            isDarkTheme -> darkColorScheme
            else -> expressiveLightColorScheme()
        }
    val shapes = Shapes(largeIncreased = RoundedCornerShape(36.0.dp))
    MaterialExpressiveTheme(colorScheme = colorScheme, shapes = shapes) {
        val currentTheme = if (!isSystemInDarkTheme()) "light" else "dark"
        ExtendedFloatingActionButton(
            text = { Text("FAB with text style and color from $currentTheme expressive theme") },
            icon = { Icon(Icons.Filled.Favorite, contentDescription = "Localized Description") },
            onClick = {},
        )
    }
}
```