confluence-expand-button.user.js

// ==UserScript==
// @name         Expand confluence
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Gjøre expand-knappen i confluence mer intuitiv
// @author       Bjørn-Vegard Thoresen
// @match        https://confluence*
// @match        https://confluence.helsedirektoratet.no/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    var __idToFind = 'plusminus';
    var __setColor = function (area) {
        area.querySelectorAll('*[id^=' + __idToFind + ']').forEach(function (expandable) {
            expandable.style['background-color'] = 'lightgray'; //Change color to w/e you want
            var id = expandable.getAttribute('id');
            id = id.replace(__idToFind, '');
            expandable.onclick = function(event) { __setColorToChild('children'+id); };
        }, this);
    };
    var __setColorToChild = function(id) {
        var area = document.getElementById(id);
        setTimeout(function() {
            __setColor(area);
        }, 100);
    };
    __setColor(document);
})();