Customization graphic level

This has always been supported by Cubic.

The latest release is 2021.04-50, and I recommend you use that, since it will have all prior bug fixes.

Keep in mind, you will need to use the command-line and modify files to make the changes you want.

Look through some of the Answers (https://answers.launchpad.net/cubic) here to see how to make the changes you want.

Here is a link to get you started:
https://answers.launchpad.net/cubic/+question/681051

Also, remember to update-initramfs when customizing Plymouth:

https://askubuntu.com/questions/1230935/how-to-install-custom-plymouth-in-cubic

...and use update alternatives to set your plymouth theme as the default.

For example:

update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/my_theme_directory/my_theme_name.plymouth 160"

If you are modifying GDM, you will need to extract, modify, and repackage /usr/share/gnome-shell/gnome-shell-theme.gresource.

There are some instructions out there you can follow; here is one I came across:

https://askubuntu.com/questions/534187/where-is-the-login-screen-wallpaper-for-gdm-stored/881769#881769

Thanks cubic-wizard fro your reply!
I know well what you suggest, but what I was wondering was if some sort of graphic or semi-graphic wizard had been added to automate the procedure.

Thanks!

Davide