I purchased this theme today, and I have successfully installed it to my site. However, the background where the Home, About, Dropdown, etc. is a shade of white and doesn't match the darker background just above it (wherer the heading is located). In your online demo, this background color is the same color all the way down to where the categories begin. The link to your page and my page appears below for comparison purposes. It was like this immediately after the upload, prior to me making any changes. Any insight or guidance you can provide is greatly appreciated.
Also, this appears to be the case in Internet Explorer 9 on my computer, but not with Google Chrome.