With gimp and a nice logo you can personalize your own distro. They will see this screen when users boot up from your iso.
We will reuse the standard Arch Linux splash.png to have the proper dimensions and change it the way we want.
After burning the iso to a usb and booting on a screen of 1920×1080 pixels I wanted the logo to be smaller.
So afterwards I re-edited the gimp file and made a tad smaller and build and burned it again.
You only see the Carli logo if you boot from msdos.
Uefi does not show the logo.
Carli Github sources
Carli 1 : https://github.com/arcolinuxiso/carli-1
Carli 2 : https://github.com/arcolinuxiso/carli-2
Carli 2 : https://github.com/arcolinuxiso/carli-3