If you don’t like the basic loading screen of your OS and you want to pimp it up a bit, you might want to check Plymouth and it’s themes.
It supports nice screen for entering your LUKS password - much nicer than the default one. I’m currently using something like this:
On Ubuntu family Linux you install it by running:
sudo apt install plymouth plymouth-themes
Take a look of a large set of themes available and gathered by adi1090x here.
Just pick up the theme you like and follow the installation instruction in the README, just don’t forget to update initramfs afterward:
Sample taken from adi1090x page, i.e. https://github.com/adi1090x/plymouth-themes
sudo cp -r angular /usr/share/plymouth/themes/
sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/angular/angular.plymouth 100
sudo update-alternatives --config default.plymouth
sudo update-initramfs -u