DataTables: Server-side formatting - json

Question

My DataTable is loaded almost entirely from the server side and I would like to keep as much processing as possible on the server to reduce the workload on the client.
By formatting I mean changing color, size, font, font-weight, adding icons and html tags... For example when a row or a few cells need to be highlighted or displayed in a specific way.
I'm thinking about using the render parameter, but I didn't find a way to set it in JSON:
render: $.fn.dataTable.render.number( ',', '.', 0, '$' ) }
An example would also be the following snippet, but it does not provide enough separation between the client and server:
{
"doc": "<strong>546546545<strong>",
"nothing": 0.0,
"order": "<div class="shipped">98745</div>"
}
While I was able to find resources on how to fetch data from the server, I can't find information on how to pass formatting data as part of the json.
Is there a way to paste formatting options in my current DataTable format to make it also optimal? What alterations need to be done?
http://jsfiddle.net/ebRXw/1004/
JSON:
{
"columns": [
{
"data": "doc",
"title": "Doc."
},
{
"data": "order",
"title": "Order no."
},
{
"data": "nothing",
"title": "Nothing"
}
],
"data": [
{
"doc": "564251422",
"nothing": 0.0,
"order": "56421"
},
{
"doc": "546546545",
"nothing": 0.0,
"order": "98745"
}
]
}
JS:
this.table = $('#example').DataTable({
data: json.rows,
columns: json.columns,
select: true,
responsive: true,
rowReorder: true,
colReorder: true,
scrollY: 680,
deferRender: true,
scroller: true
});
HTML:
<table id="example" cellspacing="0" width="100%" />