Change GridView BackColor

protected void GridView1_DataBound(object sender, EventArgs e)
    {        
        double Gridrow = GridView1.Rows.Count;
        for (int i = 0; i < Gridrow; i++)
        {
            GridViewRow row;
            row = GridView1.Rows[i];

            string Cplace;            
            Cplace = ((Label)row.Cells[2].FindControl("Label3")).Text;
            
            switch (Cplace)
            {
                case "Pali":
                    row.BackColor = System.Drawing.Color.Cyan;
                    break;

                case "Colcatta":
                    row.BackColor = System.Drawing.Color.SkyBlue;
                    break;

                case "Goa":
                    row.BackColor = System.Drawing.Color.Salmon;
                    break;

                case "Delhi":
                    row.BackColor = System.Drawing.Color.SeaGreen;
                    break;

                case "Chennai":
                    row.BackColor = System.Drawing.Color.Snow;
                    break;
            }
        }

    }