How to set different background color for each column header in Xamarin.Android DataGrid?

 
private SfDataGrid datagrid;
private ViewModel viewModel;
private TextView textView;
private TextView textView1;
private TextView textView2;
private TextView textView3;
protected override void OnCreate(Bundle bundle)
{
    base.OnCreate(bundle);
    datagrid = new SfDataGrid(BaseContext);
    viewModel = new ViewModel();
    textView = new TextView(this);
    textView1 = new TextView(this);
    textView2 = new TextView(this);
    textView3 = new TextView(this);
    datagrid.ItemsSource = viewModel.OrdersInfo;
    datagrid.ColumnSizer = ColumnSizer.Star;
    datagrid.AutoGenerateColumns = false;
            
    textView.Text = "OrderID";
    textView.Gravity = Android.Views.GravityFlags.Center;
    textView.SetBackgroundColor(Color.SandyBrown);
    textView1.Text = "CustomerID";
    textView1.Gravity = Android.Views.GravityFlags.Center;
    textView1.SetBackgroundColor(Color.Crimson);
    textView2.Text = "Freight";
    textView2.Gravity = Android.Views.GravityFlags.Center;
    textView2.SetBackgroundColor(Color.Gray);
    textView3.Text = "Country";
    textView3.Gravity = Android.Views.GravityFlags.Center;
    textView3.SetBackgroundColor(Color.Blue);
    GridTextColumn column = new GridTextColumn()
        {
            MappingName = "OrderID",
            HeaderTemplate = textView 
        };
    GridTextColumn column1 = new GridTextColumn()
    {
        MappingName = "CustomerID",
        HeaderTemplate = textView1
    };
    GridTextColumn column2 = new GridTextColumn()
    {
        MappingName = "Freight",
        HeaderTemplate = textView2
    };
    GridTextColumn column3 = new GridTextColumn()
    {
        MappingName = "Country",
        HeaderTemplate = textView3
    };
    datagrid.Columns.Add(column);
    datagrid.Columns.Add(column1);
    datagrid.Columns.Add(column2);
    datagrid.Columns.Add(column3);
    SetContentView(datagrid);