How to configure "Slick-Greeter" for 'lightdm'?

[GeneC]

Installed slick-greeter (for lightdm) from repos.

(Info in link below)
https://github.com/linuxmint/slick-greeter#configuration


But after several vain attempts to configure it. Nothing 'sticks'.  I get default black background, theme, fonts, et.

I tired.
(reboot after each change.)

1.  Creating  /etc/lightdm/slick-greeter.conf file.  (did not work)
2.  Edited the default /usr/share/lightdm/lightdm.conf.d/50-slick-greeter.conf (did not work)
3.  Use dconf-editor to change defaults (did not work)

conf.files I created

Code Select Expand

# LightDM GTK+ Configuration
# Available configuration options listed below.
#
background=/home/gene/Pictures/robot.jpg
# background-color=Background color (e.g. #772953), set before wallpaper is seen
# draw-user-backgrounds=Whether to draw user backgrounds (true or false)
# draw-grid=Whether to draw an overlay grid (true or false)
show-hostname=true
# show-power=Whether to show the power indicator in the menubar (true or false)
# show-a11y=Whether to show the accessibility options in the menubar (true or false)
# show-keyboard=Whether to show the keyboard indicator in the menubar (true or false)
# show-clock=true
# show-quit=Whether to show the quit menu in the menubar (true or false)
# logo=Logo file to use
# other-monitors-logo=Logo file to use for other monitors
theme-name=Arc-Dark
icon-theme-name=Vibrancy-Colors
font-name=BrunoAce-Regular
# xft-antialias=Whether to antialias Xft fonts (true or false)
# xft-dpi=Resolution for Xft in dots per inch
# xft-hintstyle=What degree of hinting to use (hintnone/hintslight/hintmedium/hintfull)
# xft-rgba=Type of subpixel antialiasing (none/rgb/bgr/vrgb/vbgr)
# onscreen-keyboard=Whether to enable the onscreen keyboard (true or false)
# high-contrast=Whether to use a high contrast theme (true or false)
# screen-reader=Whether to enable the screen reader (true or false)
# play-ready-sound=A sound file to play when the greeter is ready
# hidden-users=List of usernames that are hidden until a special key combination is hit
# group-filter=List of groups that users must be part of to be shown (empty list shows all users)
# enable-hidpi=Whether to enable HiDPI support (on/off/auto)
[Greeter]

This would be really a nice addition if we can get it to work. All my 'google' searching has been nil. :(

[GeneC]

Correction>

(1.  Creating  /etc/lightdm/slick-greeter.conf file.  )

Is typo. 

It is /usr/share/lightdm/slick-greeter.conf