JEASYUI : menambahkan warna di salah satu field Datagrid jeasyui

Datagrid
<script type='text/javascript'>
$(function() {
 
  var datanya = <?php echo json_encode($_POST); ?>;
  var type = '<?=$TANDA; ?>';
    $("#result").datagrid({
        //url : $.post('<?= site_url() ?>/tiket/searchResult/',datanya,'success'),
        url : '<?= site_url() ?>/masterp/searchResult/type/'+type,
      
        method : 'POST',
        queryParams: datanya,
        columns:[[
           
            {field:'Cust_ID',title:'Cust_ID',sortable:true,formatter:formatCustomerIda},
            {field:'KD_Cust',title:'KD_Cust',sortable:true},
            {field:'Nama_Cust',title:'Nama_Cust',sortable:true},
            {field:'Alamat',title:'Alamat',sortable:true},
            {field:'Telp',title:'Telp',sortable:true},
            {field:'CP',title:'CP',sortable:true},
            {field:'Nama_CustType',title:'Cust Type',sortable:true},

           
            {field:'IsAktif',title:'IsAktif',sortable:true,formatter:formatPrice}
           
        ]],
        showHeader:"true",
        toolbar:"#toolbard",
        pagination:"true",
        nowrap: "false",
        pageSize: 10,
        fitcolumns: "true",
        rownumbers: "false",
           
     
        singleSelect: "true"
     
    })
});

</script>

Javascript merubah warna
<script>
function formatCustomerIda(val,row){
    var url = "customerView.php?id=";
    return '<a href="#" onclick="ADDDatas()"><span style="color:red;">'+val+'</span></a>';
}
</script>