JSFiddle - React, Tailwind, and code Playground

HTML

<div class="one">One</div>
<div class="two">Two</div>

JavaScript

var data = {
  '.one' : 'AAA',
  '.two' : 'BBB'
};

for (var key in data)
    if (typeof(data[key]) == 'string')
        $(key).css('background-color', '#' + data[key]);