LibreOffice 4.0 looks ugly in KDE

I installed recent LibreOffice version (4.0.0.3) but it looks so ugly in my Mint KDE 14 Linux as shown in the following picture… how can I fix this issue?

I took this installation instructions

enter image description here

Adding Persona doesn’t fix this issue!

Try installing the oxygen-gtk package from your repositories.

oxygen-gtk already installed and all the other applications which use GTK works fine except the new LibreOffice!!!

Try this:

. Open the terminal,then typing the command line:

sudo mv /opt/libreoffice4.0/ure/lib/libstdc++.so.6 /opt/libreoffice4.0/ure/lib/libstdc++.so.6.old

and press enter.

. Open the libreoffice.

The answer from :
https://www.bdjl.de/localhost/?tag=kde