To all who has not yet reached this message: There is a new style created by Mr. Luebking for KDE with the euphonious name Virtuality.
"Before Apple shows their new stuff and i'll be called a copycat ;-) and since Qupzilla is now Qt5 here ...
For Qt4 & Qt5, - No KWin decoration use the Bespin window decoration for now. They're "compatible" and i won't add a specific one for KWin 4" ...
Link to his dA page and download link -> http://sienardesign.deviantart.com/art/Virtuality-451724116