Grub2 theme aka Fallout terminal interface
You can download grub2-theme-fallout.tar.gz and apply it with grub-customizer
You can change font size on your taste just call the following command with desired size instead of placeholder:
grub-mkfont -o ./theme/fixedsys-regular-${your_size}.pf2 -s ${your_size} ./raw_font.ttf
Then edit theme/theme.txt substituting *-font: "Fixedsys Regular 32" with *-font: "Fixedsys Regular ${your_size}"
If you want white colored icons just copy with replacement all files from theme/icons_white into theme/icons.
Or you can change the color of icons with any graphic editor you like.