Actually I am new to jQuery datatables plugin.
I have attached the plugin to my tables using this method using this code.
$(document).ready(function()
you can change the style of the search input very easy with css
in css File:
.dataTables_filter input { background: blue; }
With Javascript
$(".dataTables_filter input").css({ "background" :"blue" });
Try it by paste this to your console.