Gridview keep selected Row while pagination

Hi! I have a gridview, with a button which when is pressed, the row is coloured. Only one row can be selected.

But when I change page, I lose the reference of the row and it´s uncoloured. Here´s an example of my code:

                                     HorizontalAlign="Center"  EmptyDataText="No se han encontrado resultados." AllowPaging="True" OnPageIndexChanging="gvListaTit_PageIndexChanging"
                                     PageSize="3" CssClass="table table-bordered">
                                       
                                           
                                           
                                           
                                           
                                               
                                                   
                                               
                                           
                                   
                                   

        protected void Edit(object sender, EventArgs e)
        {
            foreach (GridViewRow row1 in gvListaTit.Rows)
            {
                row1.BackColor = System.Drawing.Color.White;
            }

            ImageButton btn = sender as ImageButton;
            GridViewRow row = btn.NamingContainer as GridViewRow;
            if (row.BackColor == System.Drawing.ColorTranslator.FromHtml("#83CFC6"))
            {
                row.BackColor = System.Drawing.Color.White;
                hididTitulo.Value = null;
            }
            else
            {
                row.BackColor = System.Drawing.ColorTranslator.FromHtml("#83CFC6");
                hididTitulo.Value = row.Cells[0].Text;

        }

How can I keep the selected row coloured when I change page? Thanks!