How to change the user's name colour to red in field "requested for"

[VIKAS MISHRA]

I want change the "requested for" user name colour to red on ritm form if user is VIP, i have the VIP icon ol load script to display the VIP icon within that script onlyt there is one code of line to change the colour to red but that is not working for RITM as the requested for field is read only, please suggest how to change the colour if the field is read only also.

function onLoad() {
	//Type appropriate comment here, and begin script below

	var callerLabel = $('label.sc_req_item.request.requested_for');
	var callerField = $('sys_display.sc_req_item.request.requested_for');
	if (!callerLabel || !callerField)
		return;


	var number = g_form.getValue('number');

	var ga = new GlideAjax("isVIP");
	ga.addParam("sysparm_name", "vip");
	ga.addParam("sysparm_numnber", number);
	ga.getXML(vipCallBack);
}


function vipCallBack(response) {

	var answer = response.responseXML.documentElement.getAttribute("answer");
	var callerLabel = $('label.sc_req_item.request.requested_for').down('label');
	var callerField = $('sys_display.sc_req_item.request.requested_for');
	if (callerLabel || callerField)
		callerField.setStyle({color: "red"});
		//return;
	
	//check for VIP status
	if (answer == 'true') {
		var bgPosition = "95% 55%";
        if (document.documentElement.getAttribute('data-doctype') == 'true')
            bgPosition = "40% 100%";

        callerLabel.setStyle({backgroundImage: "url(images/icons/vip.gif)", backgroundRepeat: "no-repeat", backgroundPosition: bgPosition, backgroundSize: '25px', paddingLeft: '30px',});
        //set callerField color
        callerField.setStyle({color: "red"});
    } else {
        callerLabel.setStyle({backgroundImage: ""});
        //callerField.setStyle({color: ""});
		callerField.setStyle({color: "red"});
    }
}

[Samaksh Wani]

Hello @VIKAS MISHRA 

var myVar = $('sys_display.' + g_form.getControl('requested_for').id);

myVar.setStyle({color: "red"});

Plz Mark my Solution as Accept and Give me thumbs up, if you find it Helpful.

Regards,

Samaksh