I think it was all the white; the only color is Sunny herself. Also, he has a bit of hesitation about books I recommend (despite that fact that I'm about 90% right for books he likes), so the one day pressure deterred him. The cover needed to grab him and force him to pick it up, probably by having some image of the bad guy or a sense of danger.

He's just attempted to make off with my NOOK, so I think I'll put the ebook version on there for him. He'll read it just for the excuse not to give me back my reader.