Customizing SPGridView style (with hover alt rows)

ascx

<style type="text/css"> 

.GridViewHeaderStyle {
    background-color:#c3dde0;
    border-width: 1px;
    padding: 8px;
    border-style: solid;
    border-color: #a9c6c9;
}

.GridViewAltRowStyle 
 {
     background-color: #F0F8FF;
     font-weight: bold;
     color: black;
 }
 
.GridRowStyle
 {
     background-color: #E6E6FA;
     font-weight: bold;
     color: black;
 }
 
.GridViewAltRowStyle:hover, .GridRowStyle:hover
{
   background-color: yellow;
   color: black;
   font-weight: bold;
}
 
</style> 


<SharePoint:SPGridView ID="myGridView" 
runat="server" AutoGenerateColumns="false" >
</SharePoint:SPGridView>

ascx.cs

    public partial class SPGridViewTestUserControl : UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string[] fields = { "ID","Name","Country","Total"};
            foreach (string s in fields)
            {
                BoundField bf = new BoundField();
                bf.DataField = s;
                bf.HeaderText = s;
                myGridView.Columns.Add(bf);
            }

                  
            myGridView.GroupField = "Name";
            myGridView.AllowGrouping = true;
            myGridView.AllowGroupCollapse = true;
            myGridView.AlternatingRowStyle.CssClass = "GridViewAltRowStyle";
            myGridView.RowStyle.CssClass = "GridRowStyle";
            
            myGridView.DataSource = SelectData();
            myGridView.DataBind();

            // if this is set before databind, it won't include the column where the grouping is (top left)
            foreach (DataControlField dcf in myGridView.Columns)
            {
                dcf.HeaderStyle.CssClass = "GridViewHeaderStyle";
            }
        }


        public DataTable SelectData()
        {
            DataTable dataSource = new DataTable();

            dataSource.Columns.Add(new DataColumn("ID", Type.GetType("System.Int32")));
            dataSource.Columns.Add(new DataColumn("Name", Type.GetType("System.String")));
            dataSource.Columns.Add(new DataColumn("Country", Type.GetType("System.String")));
            dataSource.Columns.Add(new DataColumn("Total", Type.GetType("System.Int32")));

            dataSource.Rows.Add(1, "Jack", "USA", 10000);
            dataSource.Rows.Add(2, "Jack", "Thailand", 15000);
            dataSource.Rows.Add(3, "Jack", "Australia", 5000);
            dataSource.Rows.Add(4, "Sam", "USA", 7000);
            dataSource.Rows.Add(5, "Sam", "Thailand", 30000);
            dataSource.Rows.Add(6, "Sam", "Australia", 8700);
            dataSource.Rows.Add(7, "Andy", "USA", 3000);
            dataSource.Rows.Add(8, "Andy", "Thailand", 50000);
            dataSource.Rows.Add(9, "Andy", "Australia", 25000);
          
            return dataSource;
        }
    }

How it looks,