Customizing The Login Screen Ubuntu Mate 16.04

[lah7]

I think LightDM GTK+ Greeter Settings as @anon42388993 points out is the closest you will get for customising the default login screen.

Of course, you're not just limited to LightDM GTK+ Greeter, as you could use unity-greeter as used in Ubuntu "Unity" for the login screen:

Make greeter transparent

Having used Ubuntu since 12.10 > 14.04 LTS I prefer a transparent greeter vs the default UM greeter. I posted both here and Ubuntu Forum and found a solution on Ubuntu Forum Here are the steps that worked for me: re-install unity-greeter [computer had Ubuntu 16 installed with Mate desktop] mkdir /etc/lightdm/lightdm.conf.d create file 99_myconfig.conf containing [Seat:*] greeter-session=unity-greeter sudo must be used to insure proper ownership Upon reboot I was ab…