Changing the default terminal icon on 16.04 LTS

I’ve tried editing the terminal.desktop file but it doesn’t list any properties. I’ve also tried clicking the image on the properties menu but when i select a new image it doesn’t change anything. I even tried creating a shortcut with “gnome-desktop-item-edit --create-new ~/Desktop” and it works but it does not treat the shortcut as an application even with the box ticked.