Google::Chart::Fill::Solid - Apply Solid Fill

  use Google::Chart;
  Google::Chart->new(
    fill => {
      args => {
        color => "ffccff",
        target => "bg",
      }
    }
  );

  Google::Chart->new(
    fill => Google::Chart::Fill::Solid->new(
      color => "ffcff",
      target => "bg"
    )
  );