This is a simple Plymouth theme (the graphical animation that you see while the system is booting), based on the Ubuntu 10.10 standard one. It features a nice green wheat background, that’s just the Ubuntu 10.10 wallpaper “Life by Paco Espinoza“, and the “Linux” text instead of “Ubuntu”.
If you have Ubuntu 10.4 or 10.10 you can install the theme just by unpacking it and by running the install-ubuntu.sh script on a terminal; for other distributions you’ll need to figure out the installation procedure by yourself.
NOTE: if you are using Ubuntu and after installing NVIDIA or ATI proprietary video card drivers you have a text only Plymouth at boot, you can fix it with this script. Basically it enables uvesafb, already present on Ubuntu 10.* kernel, by installing its user-space control programs and by configuring Grub to load the module at boot.