dc = new DataColumn("Status");
datatable.Columns.Add(dc);

workRow[6] = ValidationHelper.GetString(formRecord.GetValue("Status"), "");

    protected void OrderGridView_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            string status = (string)DataBinder.Eval(e.Row.DataItem, "Status");
            if (status == "New")
            {
                e.Row.ForeColor = System.Drawing.Color.Red;                
            }
        }
    }

TableCell cell = e.Row.Cells[6];
cell.ForeColor = System.Drawing.Color.Red;