ต้องการกำหนดสีข้อความที่ถูก select ใน listbox ต้องกำหนดยังไงครับ

<select class="ui-widget select <?=$f_class; ?>" name="opt_status" onchange="javascript: changeStatus('<?=$hotelBookResult['booking_id'] ?>', this.value);">
	<option <?php if ($hotelBookResult['status_perform'] == 0) { echo "selected"; } ?> value="0" class="f_blue">Checked</option>
	<option <?php if ($hotelBookResult['status_perform'] == 1) { echo "selected"; } ?> value="1" class="f_red">Reservations can not</option>
	<option <?php if ($hotelBookResult['status_perform'] == 2) { echo "selected"; } ?> value="2" class="f_red">Cancel Reservation</option>
	<option <?php if ($hotelBookResult['status_perform'] == 3) { echo "selected"; } ?> value="3" class="f_orange">Pending payments</option>
	<option <?php if ($hotelBookResult['status_perform'] == 4) { echo "selected"; } ?> value="4" class="f_green">Success</option>
</select>