get Main Toolbar Colors
fun getMainToolbarColors(backgroundColor: Color = MaterialTheme.colorScheme.background, textColor: Color = MaterialTheme.colorScheme.onPrimary, popupBackgroundColor: Color = MaterialTheme.colorScheme.primaryContainer, titleTextColor: Color = MaterialTheme.colorScheme.onPrimary): MainToolbarColors
Below are all the default values from MaterialTheme for compose elements.