styler.css

/* I use Stylish (a chome addin) to set these styles 
 *  URLs on the domain workflowy
 */

.next-row {
 border: 2px solid #46A546 !important; 
 border-top-left-radius:0.5em;
 background-color: #CCFFCC !important; 
}

.next {
 background-color: #46A546 !important; 
}

.blocked-row {
 border: 2px solid #4646A5 !important; 
 border-bottom-left-radius:1em;
 background-color: #CCCCFF !important; 
}

.blocked {
 background-color: #4646A5 !important; 
}

.urgent-row {
 border: 3px solid #A54646 !important; 
 border-top-left-radius:1em;
 color: #A54646;
 background-color: #FFCCCC !important; 
}

.urgent {
 background-color: #A54646 !important; 

}

workflowystyles.user.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
// @include        http*://*workflowy.com/*
// @version        1.0
// ==/UserScript==

String.prototype.endsWith = function(suffix) {
    return this.indexOf(suffix, this.length - suffix.length) !== -1;
};

var customClasses = function(index, old){
	var classes = old.split(" ");
	var custom = [];
	for( i = 0; i < classes.length; i++){
		if(classes[i].endsWith("-row")){ custom.push(classes[i]);};
		if(classes[i].endsWith("-span")){ custom.push(classes[i]);};
	};
	return custom.join(" ");
}


setInterval(function(){
	$('.name').removeClass(customClasses);
	$('.content').removeClass(customClasses );

	$('span > .contentTagText').map( function(){
		var x = $(this).text();
		$(this).parent('.contentTag').addClass(x).parent().addClass(x+"-span").parent().addClass(x+"-row");}
	);
},100);