Display hearth buttons more clearly on https://otakumode.com

custom_tokyo_otaku_mode.js

// ==UserScript==
// @name         Custom Tokyo Otaku Mode
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Display hearth buttons more clearly
// @author       Doni
// @match        https://otakumode.com/*
// @icon         https://d1u8dm08vp3e0x.cloudfront.net/images/common/apple-touch-icon.png
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    registerCss("emojiEnlarger", `
        .p-product-detail__add-to-wishlist.added .p-product-detail__action-icon:before,
        .p-product-list__add-to-wishlist.added [class^=icon-]:before {
            color: red !important;
        }
    `);

    function registerCss(id, rules) {

        if(!id) return;

        let style = document.getElementById(id);

        if(!style) {
            style = document.createElement('style');
            style.id = id;
        }

        style.type = 'text/css';
        style.innerHTML = rules;
        document.getElementsByTagName('head')[0].appendChild(style);
    }
})();