Have you tried the search function? If not try this link;
http://community.wd.com/t5/WD-TV-Live-Hub-Themes/TEXT-COLOURS-FOR-XML-CODE/m-p/255218#M4047
I think it is the second or third post there is a link to the chart. If you read a little further down there is some code that may be of some use to you.
Good luck with it all. Even though I am not a Ninja Turtle fan I think that your theme is pretty cool - stick with it - it can be quite rewarding when a theme comes together.
