JSFiddle - React, Tailwind, and code Playground

HTML

<select name="testselector">
    <option value="">The PlaceHolder</option>
    <option value="1">Value 1</option>
    <option value="2">Value 2</option>
    <option value="3">Value 3</option>
</select>

JavaScript

//setup color for Select element if value is selected. 
selectedEl = $('select').find('option:selected');
if(selectedEl.val()==""){
    $('select').css('color','#999');
    $('select').children().css('color','black');
}

$('body').on('change','select', function (){
	if($(this).find('option:selected').val() == ""){
		$(this).css('color','#999');
		$(this).children().css('color','black');
	}
	else {
		$(this).css('color','black');
		$(this).children().css('color','black');
	}
});