MyMaterialTheme.kt

private val LocalColors = staticCompositionLocalOf { LightColorPalette }

@Composable
fun MyMaterialTheme(
    darkTheme: Boolean = isSystemInDarkTheme(),
    content: @Composable () -> Unit,
) {
    val colors = if (darkTheme) {
        DarkColorPalette
    } else {
        LightColorPalette
    }
    CompositionLocalProvider(LocalColors provides colors) {
        MaterialTheme(
            colors = colors.material,
            content = content,
        )
    }
}