Additional link might needed someday sumpah lg males

https://linuxmusicians.com/viewtopic.php?f=19&t=18536
https://launchpad.net/~gerardpuig/+archive/ubuntu/ppa
https://launchpad.net/~gottcode/+archive/ubuntu/gcppa

Qt4 applications don't use the GTK style. This can be fixed - firstly, install qt4-qtconfig:

sudo apt-get install qt4-qtconfig

Then, launch "Qt 4 Settings" from the menu (or via a terminal: "qtconfig") and on the "Appearance" tab, set the "GUI Style" to "GTK+", then select File > Save.

sudo add-apt-repository ppa:communitheme/ppa
sudo apt-get update

sudo apt-get install gtk-communitheme suru-icon-theme 

FJGCP-4DFJD-GJY49-VJBQ7-HYRR2 

wget -qO- https://raw.githubusercontent.com/PapirusDevelopmentTeam/papirus-libreoffice-theme/master/install-papirus-root.sh | sh 

For LibreOffice 6, download and install this extension : https://onedrive.live.com/?authkey=%21AJWE7bWPVzSXlTs&cid=0716985C019A0AB8&id=716985C019A0AB8%21675&parId=root&o=OneUp with Tools > Extension manager.
The theme packaged as an extension is the easiest way to install (no admin 
rights needed). This feature has been added in LibreOffice 6.

sudo add-apt-repository ppa:ravefinity-project/ppa
sudo apt-get update
sudo apt-get install ambiance-colors radiance-colors

themes directory is  /usr/share/themes/

https://www.gnome-look.org/browse/cat/136/ord/latest/  

Unetbootin :

https://sourceforge.net/projects/unetbootin/files/UNetbootin/494/unetbootin-linux-494/download

  wget -q -O /tmp/libpng12.deb http://mirrors.kernel.org/ubuntu/pool/main/libp/libpng/libpng12-0_1.2.54-1ubuntu1_amd64.deb

  dpkg -i /tmp/libpng12.deb

  rm /tmp/libpng12.deb