Hi, congratulations on MX5 beta.
Now, please reduce infobox size. It is taking a huge screen space without reason. I see blank space around everything. If it needs to grow at some point, do it, but blank space=wasted space. You could enlarge the address box to show the full address (not just the domain name, let that for Internet exploited and Chromium oxide). Reducing the button size (back, reload, home) would be a good idea as well.
Missing my dark skin, I understand that kind of cus