Nope, it's definately adding a style sheet... here is what gets added by default:
<style type="text/css"><!--
body {background-color: #ffffff; color: #000000;}
body, td, th, h1, h2 {font-family: sans-serif;}
pre {margin: 0px; font-family: monospace;}
a:link {color: #000099; text-decoration: none;}
a:hover {text-decoration: underline;}
table {border-collapse: collapse;}
.center {text-align: center;}
.center table { margin-left: auto; margin-right: auto; text-align: left;}
.center th { text-align: center; !important }
td, th { border: 1px solid #000000; font-size: 75%; vertical-align: baseline;}
h1 {font-size: 150%;}
h2 {font-size: 125%;}
.p {text-align: left;}
.e {background-color: #ccccff; font-weight: bold;}
.h {background-color: #9999cc; font-weight: bold;}
.v {background-color: #cccccc;}
i {color: #666666;}
img {float: right; border: 0px;}
hr {width: 600px; align: center; background-color: #cccccc; border: 0px; height: 1px;}
//--></style>
Yea, I could rewrite the function but that defeats the purpose of having phpInfo in the first place. It's very convenient to use it, esp. as future revisions keep coming... not in the mood of constantly upgrading my own phpInfo 🙂
Unfortunately, there were no config settings in php.ini I saw that would help me reconfigure this.
Still looking for a solution 🙁