None that I have seen. Kier says the palette will receive a new UI in 1.1. That might include some kind of color map like you want.
Not to dismiss your question, but it's fairly easy to identify what palette colors affect what areas of the page by quickly changing and reverting the different colors while viewing the forum page. And if you have trouble finding some of the colors then I can help if you post a screenshot of what you are trying to change on the page.