You're right Chuck ! It Works.
In additional.css, I've change following vars :
searchBox -> royalSearchBox
searchInputBox -> royalSearchInputBox
searchInput -> royalSearchInput
memberLogin -> royalLogin
memberLoginLeft -> royalLoginLeft
memberLoginRight -> royalLoginRight
In Template style : navbar change this vars with the new one !
Finally, I've installed all of your product (latest version) and that works perfect with VB
Cms 4.1.2 !