To install a plymouth theme, you can use apt to get one of those ugly themes in the repository, or download it for example from gnomelook.org. Then you need to unpack it in /usr/share/plymouth/themes as root. For example, we've downloaded a theme called "solar". We need to let the system know that this theme is available and we want to use it as default. I won't explain the meaning of all the commands we need, you can look in Internet by yourself. As super user (or root) type in a terminal window:$ sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/solar/solar.plymouth 100Then:$ sudo update-alternatives --config default.plymouthHere you must chose the theme you want (solar in our case)Last:$ sudo update-initramfs -uThat's it.
Plymouth themes on Ubuntu
To install a plymouth theme, you can use apt to get one of those ugly themes in the repository, or download it for example from gnomelook.org. Then you need to unpack it in /usr/share/plymouth/themes as root. For example, we've downloaded a theme called "solar". We need to let the system know that this theme is available and we want to use it as default. I won't explain the meaning of all the commands we need, you can look in Internet by yourself. As super user (or root) type in a terminal window:$ sudo update-alternatives --install /usr/share/plymouth/themes/default.plymouth default.plymouth /usr/share/plymouth/themes/solar/solar.plymouth 100Then:$ sudo update-alternatives --config default.plymouthHere you must chose the theme you want (solar in our case)Last:$ sudo update-initramfs -uThat's it.