The color (or lack thereof) of this actually makes it very difficult to see things quickly (and hit control items easily).
On top of that, it doesn't change anything I would want or need to alter.
Sorry, but I'd have to say, nice try, but go on to another scheme.
For people who are interested in skinning iTunes, check out the full size capture first, and contemplate carefully if you really want to get stuck with this variation... It seems like you might have to completely re-install iTunes if you want to revert.