In edition 150 I read your review of KDE 4.7 and agree with the sentiment that it's now very, very, good.
You did note 1 thing though and that was the tooltips in libreoffice appeared to be black with black text i.e unreadable and you couldn't see how to change them. Don't know whether you have found the answer yet but the tendency is always I suggest to see what can be tweaked in LOo to change this. However, I found the place to look is in kmenu/system settings/application appearance/colours. You can change the tooltips colour there which also takes effect within LOo.