如何在jetpack compose中更改BasicTextField的backgorundColor？

import androidx.compose.foundation.text.BasicTextField
import androidx.compose.material.MaterialTheme
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

@Composable
fun CustomTextField(
    value: String,
    onValueChange: (String) -> Unit,
    backgroundColor: Color
) {
    BasicTextField(
        modifier = Modifier
            .background(color = backgroundColor)
            .padding(8.dp),
        value = value,
        onValueChange = onValueChange,
        textStyle = MaterialTheme.typography.body1.copy(color = Color.Black)
    )
}

@Composable
fun MyApp() {
    val textState = remember { mutableStateOf("") }
    
    CustomTextField(
        value = textState.value,
        onValueChange = { textState.value = it },
        backgroundColor = Color.LightGray
    )
}

@Preview
@Composable
fun PreviewApp() {
    MyApp()
}