$ yaourt -S grub2-theme-vimix-git

GRUB_THEME="/boot/grub/themes/Vimix/theme.txt"

$ grub-mkconfig -o /boot/grub/grub.cfg

$ cd Downloads/
$ git clone https://github.com/Se7endAY/grub2-theme-vimix.git && cd grub2-theme-vimix
$ sudo cp -r Vimix/ /boot/grub2/themes/ 
$ sudo nano /etc/default/grub

$ GRUB_THEME="/boot/grub2/themes/Vimix/theme.txt"

$ GRUB_TERMINAL_OUTPUT="console"

$ sudo grub2-mkconfig -o /etc/grub2.cfg

$ sudo grub2-mkconfig -o /etc/grub2-efi.cfg