I tried to install pantheon on ubuntu 16.04.1 with ppa. After the installation pantheon was not available as a desktop so i removed it. but after that the while the gnome terminal was transpired there is a white area behind it as you see in the image.
I am using gnome 3.20
I installed Pantheon desktop from the elementary-os daily repository. Link - How to install the Pantheon desktop environment?
And gnome 3.20 from the gnome3-team repository. Link - http://www.webupd8.org/2016/04/how-to-install-gnome-320-in-ubuntu.html?m=1