Okay, so I changed my mind. I've changed my design again, going for an all-white background with dark green text. As I said in my last post, I was unsure about whether I really liked the previous design (green background with yellow text), and Craig's comment on that post solidified my own opinion. I know that others said they liked the green/yellow design - and thank you very much! - but I had to go with my gut.
We'll see how long this lasts until I start futzing around with it again.