WorkflowyStylableTags.js

// ==UserScript==
// @name           WorkflowyStylableTags
// @description    Gives each tag it's own css style, so you can style them with Stylish. I use Blank Canvas to manage my userscripts in Chrome.
// @author         Nigel Thorne and LukeMT and bdelespierre
// @include        http*://*workflowy.com/*
// @version        1.2
// ==/UserScript==

var customClasses = function(index, old){
    return old.split(" ").filter(str => str.match(/-proj$/)).join(" ");
};

setInterval(function(){
    $('.project,.pageContainer').removeClass(customClasses);

    $('.contentTag').map(function(i, item) {
        $(item).parent().parent().parent().addClass(item.innerText.substr(1)+"-proj");
    });
},1000);