Instruct: Classify Amazon reviews into positive or negative sentiment
Query: hurts my eyes

I received my Kindle today and I'll return it as soon as the post office opens. I was under the impression that the black text is on a white background. That's what's shown on pictures of the Kindle. However, the background is gray and it's actually hard to read the text without hurting my eyes. So much for "it reads like a book". It also annoys me that the reaction time of the Kindle is slow. You click a button and -1-2-3- the page turns. That's just too slow.I enjoy the Kindle for PC-software a lot better and I think I'll stay with it until a few more generations of eReaders have gone by.