Screenshot

$root: cp -r ~/dm /boot/efi/EFI/refind/themes
$root: nvim + /boot/efi/EFI/refind/refind.conf # Opens nvim and puts the cursor on the last line
$root: # Append "include themes/dm/theme.conf" to `refind.conf`

NOTES:

Obviously rEFInd is needed to use this. Install with your package manager refind-efi. You many need to run refind-install afterwards.

If the refind bootloader doesn't show up on boot even after running refind-install. Run efibootmgr (to see the current boot order), then set the order so it is loaded first, for example: efibootmgr -o 0002,0003,0001. You may first need to clear the boot order: efibootmgr -O OR delete a specific entry: efibootmgr -A 0002

Font: Dento font

Icons: Lightness for burg & refind-ambience.

Reddit: rEFInd