Greeter styles

[forneus]

In order to freely customize lightdm use the lightdm web-kit greeter. Other options are not going to give you much leeway for customization. There are caveats with whatever you choose to do and  LL is a highly customized XFCE DE. It all depends on your level of expertise. You can certainly compile your own greeter if you have that skill. If you are pressed for disk space or RAM, or CPU I would not try the KDE greeter as the dependencies to add would be considerable. The Unity greeter will give you problems because of the lack of the Unity manager in LL. I don't know how far you want to go with this but below are several links which should give you an idea of what you are getting into.

https://www.maketecheasier.com/customize...dm-themes/
https://wiki.debian.org/LightDM
https://wiki.ubuntu.com/LightDM
https://launchpad.net/lightdm-gtk-greeter-settings

The last link is to a small settings manager that may work but I have not tested it. You will need the Xenial version. I am tied up with work until Monday but if you can provide me with the theme and icons you wish to use I may be able to walk you through what you wish to do. I do not recommend any solutions, that involve changing greeters, except the web-kit solution, nor do I recommend adding greeter managers. Best to work within the greeter we have in LL.

TC 

This is helpful, thank you very much. Going to postpone heavy greeter customizations and study these options instead.