How to change grub theme?

[Disil]

As the title says, how do I change the grub theme so I can use other themes instead of the green background? I already installed grub-theme-breeze but the grub menu still shows the stock SpiralLinux one.

[geckolinux]

Hi there, please try the GRUB Customizer utility that comes pre-installed.

[Disil]

can I change it without grub customizer?

[robertocannito]

Remove splash.png from /boot/grub
sudo update-grub
reboot and you will find emarald theme from debian
at that point install theme that you want folloing istruction included with theme

Me too, If I can avoid to use Grub Customizer, sametime it may be very dangerous