Ubuntu terminal transparent theme
Open your terminal (Ctrl+Alt+T), and copy-Paste the following line:
gconftool-2 --load diditheme.xml
I suggest to install oh-my-zsh and use Flatabulous ubuntu theme to improve your visual experience.
To install it, you can follow the instruction here: https://github.com/robbyrussell/oh-my-zsh, or simply enter the following commands in your terminal:
sudo apt-get install git zsh
sh -c "$(wget https://raw.github.com/robbyrussell/oh-my-zsh/master/tools/install.sh -O -)"
It should be effective after you restart your ubuntu session.
Personnaly, I also installed the ubuntu flat theme: Flatabulous available here: https://github.com/anmoljagetia/Flatabulous.
I gives a really fresh design to your ubuntu ;)