Back at Ubuntu 14.04, I used ambiance-dark theme, and when I updated to 16.04 I could not install it with the usual way I used to employ in previous versions of Ubuntu, the commands I used are:
sudo add-apt-repository ppa:noobslab/themes
sudo apt-get update
sudo apt-get install ambiance-dark
And when I used them now it shows me:
sudo apt-get install ambiance-dark
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package ambiance-dark
Best Answer
add ppa to the repo as normal, do not update the repo. Go into system settings>software & updates>other software.
There you'll need to edit the ppa both main & source. Where you see Distribution, change it from 'Xenial' to 'Trusty'.
Now in terminal run,
I tried & it worked. Good luck