Change gridview cell color and column color

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections.Generic;
using System.Drawing;
 
public partial class _Default : System.Web.UI.Page 
{
    protected void Page_Load(object sender, EventArgs e)
    {
 
        List<dataStruct> mylist = new List<dataStruct>();
 
        mylist.Add(new dataStruct(new DateTime(1982, 01, 01), "Bill", 'm'));
        mylist.Add(new dataStruct(new DateTime(1981, 01, 01), "Philip", 'm'));
        mylist.Add(new dataStruct(new DateTime(1980, 01, 01), "Susan", 'f'));
 
        GridView1.DataSource = mylist;
        GridView1.DataBind();
 
    }
 
    public struct dataStruct
    {
        
        private DateTime birthdate;
        private string name;
        private char sex;
        public DateTime BirthDate
        {
            get { return birthdate; }
            set { birthdate = value; }
        }
 
        public string Name
        {
            get { return name; }
            set { name = value; }
        }
 
        public char Sex
        {
            get { return sex; }
            set { sex = value; }
        }
	
 
        public dataStruct(DateTime _birthdate, string _name, char _sex)
        {
 
            this.birthdate = _birthdate;
            this.name = _name;
            this.sex = _sex;
        }
    }
 
    private List<int> changeColorOnThisColumn;
 
    protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
    {
 
        // initialize changeColorOnThisColumn if it has not been initialized yet.
        if (changeColorOnThisColumn == null)
            changeColorOnThisColumn = new List<int>();
 
        // If this is the header row
        if (e.Row.RowIndex == -1)
        {
            // initialize a counting variable to keep track of the cell index
            int index = 0;
            foreach (TableCell cell in e.Row.Cells)
            {
                // if the Column is the column that you want to change the color for, add it to the list of columns
                if (cell.Text == "BirthDate")
                    changeColorOnThisColumn.Add(index);
                index++;
            }
 
        }
        // If this is not the header row
        else if (e.Row.RowIndex != -1)
        {
            dataStruct curStruct = (dataStruct)e.Row.DataItem;
 
            if (curStruct.Sex == 'f')
                e.Row.Cells[0].BackColor = Color.Pink;
            else
                e.Row.Cells[0].BackColor = Color.Blue;
 
            foreach (int index in changeColorOnThisColumn)
            {
 
                e.Row.Cells[index].BackColor = Color.Beige;
 
            }
 
        }
    }
}

                                              

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