For those of you whose books haven't yet arrived, I think I would advise you to wait a little before agonising about colour schemes, especially as there is plenty of time to go.
Otherwise, try assembling some colours from your stash that you think you might use, and when you have a handful of them, try them out on different colours that could be backgrounds.
Auditioning this way might help you come to a decision, or at least decide whether to go for a dark background, or a light one. And don't forget, there is still plenty of time to change your mind too!