JSGrid RowRenderer Custom Class

HTML

<link rel="stylesheet" href="http://js-grid.com/css/jsgrid.min.css">
<link rel="stylesheet" href="http://js-grid.com/css/jsgrid-theme.min.css">
<script src="http://js-grid.com/js/jsgrid.min.js"></script>
<script src="http://underscorejs.org/underscore-min.js"></script>
<link rel="stylesheet" href="https://code.jquery.com/ui/1.10.4/themes/redmond/jquery-ui.css">
<script src="https://code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<div id="jsGrid"></div>

CSS

.custom-row td {
    background: #ffefef;
}

JavaScript

var data = [ {
	"Month" : "Apr2019",
	"$ Actual Sales" : 250,
	"% YoY Sales Growth" : 20,
	"$ Budget Allocated" : 290,
	"% BvA" : 86,
	"$ Target Allocated" : 290,
	"$ Target Revised" : 300,
	"% TvA" : 83,
	"Reason for Revision by Requestor" : "",
	"Reason for Re-Submission by Approver" : "",
	"$ Reforecasted Sales" : "",
}, {
	"Month" : "May2019",
	"$ Actual Sales" : 865,
	"% YoY Sales Growth" : 15,
	"$ Budget Allocated" : 945,
	"% BvA" : 92,
	"$ Target Allocated" : 945,
	"$ Target Revised" : 1000,
	"% TvA" : 87,
	"Reason for Revision by Requestor" : "",
	"Reason for Re-Submission by Approver" : "",
	"$ Reforecasted Sales" : "",
}, {
	"Month" : "Jun2019",
	"$ Actual Sales" : 950,
	"% YoY Sales Growth" : -5,
	"$ Budget Allocated" : 1000,
	"% BvA" : 95,
	"$ Target Allocated" : 1000,
	"$ Target Revised" : 1000,
	"% TvA" : 95,
	"Reason for Revision by Requestor" : "",
	"Reason for Re-Submission by Approver" : "",
	"$ Reforecasted Sales" : 950,
}, {
	"Month" : "Jul2019",
	"$ Actual Sales" : "",
	"% YoY Sales Growth" : "",
	"$ Budget Allocated" : 1000,
	"% BvA" : "",
	"$ Target Allocated" : 1000,
	"$ Target Revised" : 1050,
	"% TvA" : 0,
	"Reason for Revision by Requestor" : "Festival Event",
	"Reason for Re-Submission by Approver" : "",
	"$ Reforecasted Sales" : 950,
}, {
	"Month" : "Aug2019",
	"$ Actual Sales" : "",
	"% YoY Sales Growth" : "",
	"$ Budget Allocated" : 1000,
	"% BvA" : "",
	"$ Target Allocated" : 1000,
	"$ Target Revised" : 1200,
	"% TvA" : 0,
	"Reason for Revision by Requestor" : "Festival Event",
	"Reason for Re-Submission by Approver" : "",
	"$ Reforecasted Sales" : 950,
}, {
	"Month" : "Sep2019",
	"$ Actual Sales" : "",
	"% YoY Sales Growth" : "",
	"$ Budget Allocated" : 1000,
	"% BvA" : "",
	"$ Target Allocated" : 1000,
	"$ Target Revised" : 1400,
	"% TvA" : 0,
	"Reason for Revision by Requestor" : "Festival Event",
	"Reason for Re-Submission by Approver" : "",
	"$ Reforecasted Sales" : 950,
}, {
	"Month" : "Oct2019",
	"$ Actual Sales" : "",
	"%...