That's GREAT! But you're probably right... something more "neutral" would wear better with successive playings of the disc...
First thought that comes to my mind is the artwork from the early-70's(?) movie poster: Uncle Remus, the two kids, Brer Rabbit, Brer Fox & Brer Bear coming over the hill, with a very simple background. In fact, that artwork is featured on the entrance page of SongOfTheSouth.net - which is still there, BTW! (A post or two in this thread led me to believe it was taken down. Indeed, when I tried to access the site, I couldn't, but when I found a link to the aforementioned entrance page, there it was!) Anyway, there's plenty of artwork (albeit at varying resolutions) to be found there...