JSFiddle - React, Tailwind, and code Playground
HTML
<select class="mySelect">
<option value="1" selected="selected">continent</option>
<option value="2">US</option>
<option value="3">UK</option>
</select>
JavaScript
$('.mySelect').change(function () {
if($(this).find("option:selected").attr("value")==2){
$(this).find('option:selected').css('color', 'red');
}else{
$(this).find('option:selected').css('color', 'blue');
}
});