JSFiddle - React, Tailwind, and code Playground

by SnakeEyes

HTML

<select id="ddl">
    <option style="background:#0f0">a</option>       
    <option style="background:#f00">b</option>   
    <option>c</option>
</select>

JavaScript

$(function(){
    $("#ddl").on("change", function(){
        $("#ddl").attr("style", $("#ddl option:selected").attr("style"));
        $("#ddl option").each(function(k, v){
            if($(this).attr("style") == null){
                $(this).attr("style", "background: #FFF");
            }
       });
    });        
});