Hmm…I actually prefer that black and white one better…The blue one is a nice design, just the text is really hard to see like what other people said. The main point of making the back cover is to let other people know the infomation about the CD, so if the text is hard to read it can be pretty annoying for some people.
I’d like to see that blue cover, with white/light (or just turn up a bit of contrast or brightness) skyblue and smaller text and place it at some slightly darker area. I think it will help.