section color in uitableview in swift code example

Example 1: swift how to change the header color

func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let returnedView = UIView(frame: CGRectMake(x, y, width, height)) //set these values as necessary
    returnedView.backgroundColor = UIColor.lightGrayColor()

    let label = UILabel(frame: CGRectMake(labelX, labelY, labelWidth, labelHeight))
    label.text = self.sectionHeaderTitleArray[section]
    returnedView.addSubview(label)

    return returnedView
}

Example 2: change background color of uitableview section header

func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
    (view as! UITableViewHeaderFooterView).contentView.backgroundColor = UIColor.black.withAlphaComponent(0.4)
    (view as! UITableViewHeaderFooterView).textLabel?.textColor = UIColor.white
}