问题的根本原因是由于LargeTopAppBar的容器默认情况下会覆盖containerColor的色值，从而导致设置的颜色无法生效。解决方法是需要使用Modifier来指定样式并将backgroundColor属性设置为containerColor，从而将指定的颜色应用到容器中。代码示例如下：

@Composable
fun CustomTopAppBar(title: String) {
    val appBarColor = MaterialTheme.colors.primary

    TopAppBar(
        title = { Text(text = title, color = Color.White) },
        navigationIcon = {
            IconButton(onClick = { /* doSomething() */ }) {
                Icon(Icons.Default.Menu, contentDescription = null, tint = Color.White)
            }
        },
        modifier = Modifier.background(color = appBarColor),
    )
}

@Composable
fun LargeTopAppBar() {
    val containerColor = Color.Blue

    Column(
        modifier = Modifier.fillMaxSize(),
        verticalArrangement = Arrangement.Top,
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
        CustomTopAppBar(title = "Large TopAppBar")
        Text(text = "This is the body content", modifier = Modifier.background(
            color = containerColor).fillMaxSize(),
        )
    }
}