sudo apt-get build-dep gtk3-engines-oxygen
sudo apt-get install git
sudo apt-get purge gtk3-engines-oxygen

git clone -b gtk3 git://anongit.kde.org/oxygen-gtk oxygen-gtk3
wget --no-check-certificate -O oxygen-gtk3/299001.patch https://bugs.kde.org/attachment.cgi?id=70781

cd oxygen-gtk3
patch -Np1 < 299001.patch
mkdir build
cd build
cmake ../
make -j2
sudo make install