Customized QUnit CSS style. Dark, with Monokai colors.

qunit.css

/**
 * QUnit v1.4.0pre - A JavaScript Unit Testing Framework
 *
 * http://docs.jquery.com/QUnit
 *
 * Copyright (c) 2012 John Resig, Jörn Zaefferer
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * or GPL (GPL-LICENSE.txt) licenses.
 */

/** Font Family and Sizes */

body {
    background-color: #191919;
    margin: 0;
}

strong, b {
    font-weight: normal;
}

#qunit-tests, #qunit-header, #qunit-banner, #qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult {
	font-family: "Helvetica Neue Light", "HelveticaNeue-Light", "Helvetica Neue", Calibri, Helvetica, Arial, sans-serif;
}

#qunit-testrunner-toolbar, #qunit-userAgent, #qunit-testresult, #qunit-tests li { font-size: small; }
#qunit-tests { font-size: smaller; }


/** Resets */

#qunit-tests, #qunit-tests ol, #qunit-header, #qunit-banner, #qunit-userAgent, #qunit-testresult {
	margin: 0;
	padding: 0;
}


/** Header */

#qunit-header {
	padding: 0.5em 0 0.5em 1em;

	color: #8699a4;
	background-color: #0d3349;

	font-size: 1.5em;
	line-height: 1em;
	font-weight: normal;

	border-radius: 15px 15px 0 0;
	-moz-border-radius: 15px 15px 0 0;
	-webkit-border-top-right-radius: 15px;
	-webkit-border-top-left-radius: 15px;
}

#qunit-header a {
	text-decoration: none;
	color: #75715E;
}

#qunit-header a:hover,
#qunit-header a:focus {
	color: #fff;
}

#qunit-header label {
	display: inline-block;
}

#qunit-banner {
	height: 5px;
}

#qunit-testrunner-toolbar {
	padding: 0.5em 0 0.5em 2em;
	color: #A6E22E;
	background-color: #eee;
}

#qunit-userAgent {
	padding: 0.5em 0 0.5em 2.5em;
	background-color: #2b81af;
	color: #fff;
	text-shadow: rgba(0, 0, 0, 0.5) 2px 2px 1px;
}


/** Tests: Pass/Fail */

#qunit-tests {
	 list-style: circle inside;
}

#qunit-tests li {
	padding: 0.3em 0.3em 0.3em 0.3em;
	border-bottom: 1px solid #191919;
	list-style-position: inside;
}

#qunit-tests.hidepass li.pass, #qunit-tests.hidepass li.running  {
	display: none;
}

#qunit-tests li strong {
	cursor: pointer;
	padding-left: 10px;
}

#qunit-tests li a {
	padding: 0.5em;
	color: #75715E;
	text-decoration: none;
}
#qunit-tests li a:hover,
#qunit-tests li a:focus {
	color: #75715E;
}

#qunit-tests ol {
	margin-top: 0.5em;
	padding: 0.5em;
	background-color: #191919;
}

#qunit-tests table {
	border-collapse: collapse;
	margin-top: .2em;
}

#qunit-tests th {
	text-align: right;
	vertical-align: top;
	padding: 0 .5em 0 0;
}

#qunit-tests td {
	vertical-align: top;
}

#qunit-tests pre {
    font-family: Monospace;
    font-size: 13px;
	margin: 0;
	white-space: pre-wrap;
	word-wrap: break-word;
}

#qunit-tests del {
	background-color: #A6E22E;
	color: #000;
	text-decoration: none;
}

#qunit-tests ins {
	background-color: #F92672;
	color: #000;
	text-decoration: none;
}

/*** Test Counts */

#qunit-tests b.counts                       { color: #E18124; }
#qunit-tests b.passed                       { color: #A6E22E; }
#qunit-tests b.failed                       { color: #F92672; }

.test-source, .test-diff                    { color: #fff }
.test-source>th, .test-diff>th              { color: #FD971F }

#qunit-tests li li {
	margin: 0.5em;
	padding: 0.4em 0.5em 0.4em 0.5em;
	background-color: #191919;
	border-bottom: none;
	list-style-position: inside;
}

/*** Passing Styles */

#qunit-tests li li.pass {
	color: #A6E22E;
	background-color: #191919;
	padding-left: 15px;
	border-left: 4px solid #A6E22E;
}

#qunit-tests .pass { 
    padding: 0px; 
    color: #fff; 
    background-color: #121212; 
    display: block;
    min-height: 22px;
    padding-top: 6px; 
}

#qunit-tests .pass .test-name               { color: #A6E22E; }

#qunit-tests .pass .test-actual,
#qunit-tests .pass .test-expected           { color: #999999; }

#qunit-banner.qunit-pass                    { background-color: #A6E22E; }

/*** Failing Styles */

#qunit-tests li li.fail {
	color: #F92672;
	background-color: #191919;
	border-left: 4px solid #F92672;
	padding-left: 15px;
	white-space: pre;
}

#qunit-tests .fail { 
    padding: 0px; 
    color: #fff; 
    background-color: #121212; 
    display: block;
    min-height: 22px;
    padding-top: 6px; 
}

#qunit-tests .fail .test-name,
#qunit-tests .fail .module-name             { font-weight: bold; color: #F92672; }

#qunit-tests .fail .test-actual             { color: #F92672; }
#qunit-tests .fail .test-expected           { color: #A6E22E;   }

#qunit-banner.qunit-fail                    { background-color: #F92672; }


/** Result */

#qunit-testresult {
	padding: 4px 10px 4px 10px;
    margin-top: 3px;
	color: #fff;
	background-color: #191919;

	border-bottom: 1px solid #191919;
}

/** Fixture */

#qunit-fixture {
	position: absolute;
	top: -10000px;
	left: -10000px;
	width: 1000px;
	height: 1000px;
}

It's ugly modification of default QUnit CSS. I use it in Aptana Studio's internal web browser, with Monokai theme (and custom background). My index.html <body> looks like that:

<body>
    <ol id="qunit-tests"></ol>
</body>

And this style will not work with default index.html