My machine is running Windows 7 64 bit. The color depth is 32 bit. I did successfully change the viewer to night viewing so that is not an issue.
I said in my first post that I installed 0.8.0 but that was a mistype. At the bottom left is "0.9.0". I also tried reinstalling calibre but there was no change. I cannot figure out what is going on.
I have attached an image; hopefully that will help. Thank you for your assistance.