- Get theme archive:
wget https://github.com/shvchk/poly-light/archive/master.zip
- Unpack theme:
unzip master.zip
- Remove theme archive:
rm master.zip
- Create GRUB themes directory:
sudo mkdir -p /boot/grub/themes
- Move theme to GRUB themes directory:
sudo mv poly-light-master /boot/grub/themes/poly-light
- Set
GRUB_THEME=/boot/grub/themes/poly-light/theme.txt
in GRUB config:sudo nano /etc/default/grub
- Update GRUB:
sudo update-grub