I wanna install the noobslab Dark Theme in Ubuntu 14.04. I'm following the steps defined in the site http://www.noobslab.com/2014/05/delorean-dark-theme-updated-install-in.html but when I try the first step
sudo add-apt-repository ppa:noobslab/themes
I get the following error
Cannot add PPA: 'ppa:noobslab/themes'. Please check that the PPA name or format is correct.
Can someone please guide me to install the theme?
I've been searching for an hour and I don't get any answer to this error.
I'm behind a proxy and I checked the /etc/apt/apt.conf and it seems to be OK. Here it's
Acquire::http::proxy "http://192.168.200.17:808/"; Acquire::https::proxy "https://192.168.200.17:808/"; Acquire::ftp::proxy "ftp://192.168.200.17:808/"; Acquire::socks::proxy "socks://192.168.200.17:808/";
I'm new in Linux and I don't have idea about what can be happening :(