JSFiddle - React, Tailwind, and code Playground

HTML

<div id="sw" style="color:blue">test</div>

JavaScript

setInterval(function(){
if($("#sw").css("color") == "rgb(0, 0, 255)"){
$("#sw").css("color","Red");
 }
 else if($("#sw").css("color") == "rgb(255, 0, 0)")
 {
    $("#sw").css("color","green");
 }
else{
$("#sw").css("color","Blue");
 }
},1000);