Hello, sorry I was off and missed your comment. It looks like you are getting some kind of visual alteration from an installed theme, or other userChrome.css customization, at first sight.
I need more details to investigate your issue. => Can you open it on https://github.com/aaFn/Bookmark-search-plus-2/issues, with some screenshots, so that we can dig into what is the root cause of your problem ?
