Since the images in Virtualbox are too small I have taken pictures with my smartphone. Hence the stripes and reflection. Bear that in mind.
Depending if you are on ArcoLinuxD or ArcoLinuxB make sure you have grub-customizer installed.
Then install our grub package
sudo pacman -S arcolinux-grub-theme-vimix-git
Select vimix in the grub-customizer as theme.
Then you can reboot and enjoy the standard background.
If you want to change the wallpaper then there are two ways to do that.
- copy paste a wallpaper over on background.jpeg
- use grubcustomizer
Follow the video to know how that is done