A couple weeks ago I posted about a plugin we were working on to get ProofBuddy working inside a WordPress theme. Well, it's up and ready. Just added a page on our documentation site on how to, with the help of a plugin, to get ProofBuddy wrapped in your WordPress theme.
It's not 100% where we want it yet. Most notably the iframe is a bit jumpy as it resizes. But it is a much easier way to get your proofing pages to look like your main site if you're using WordPress.