SLiM is an acronym for Simple Login Manager. Lightweight and easily configurable, SLiM requires minimal dependencies.
SLiM is very easy to install and customize, and it looks pretty nice.
SLiM theme consists of 2 images and a configuration file.
It comes with 5 different themes upon installation.
There are also many nice themes available for download on the internet.
I decided to modify my SLiM login-in screen so that it matches my winter theme.
I started with the Material theme.
I downloaded the theme, replaced the background.png, and modified the panel.png.
It was pretty nice, but it had the wrong colors.
Recoloring in GIMP
GIMP can easily swap the colors.
All one needs to do is choose which color to change and into what color.
In my case, that was from #ed2553 to #ae3a3a.
Here are some of the variations:
After I was done with modifying the files I needed, I moved the theme to my home folder and started the SLiM installation.
Open the Terminal and type:
sudo apt install slim
Choose the default display manager (slim).
Go to the SLiM themes directory, and there, open the terminal by right-clicking. ("Open Terminal Here")
sudo mv ~/winter .
Check the ownership and rights (ls -la).
Set the proper ownership and rights, just for the case.
sudo chown -R root:root winter
sudo chmod 755 winter
Control with ls -la
Now we need to set our new theme as the default.
Open another Terminal and type:
sudo nano /etc/slim.config
Scroll down until the line "current_theme" and enter the theme name, here "winter".
Restart your computer.
Upon boot, SLiM should greet you.
Some additional information and screenshots of SLiM customization: