How do I change the font colours for grub?

Question

I managed to change the background on the boot screen and now I need to set the font colours to something I can read. I've been lurking around the Ubuntu Forums and the Ask site and I've also tried with the grub-customizer with no luck. All I need is the right code for grub file.

Here's a copy of my current grub:

GRUB_DEFAULT="saved"
GRUB_SAVEDEFAULT="true"
#GRUB_HIDDEN_TIMEOUT="0"
GRUB_HIDDEN_TIMEOUT_QUIET="true"
GRUB_TIMEOUT="10"
GRUB_DISTRIBUTOR="`lsb_release -i -s 2> /dev/null || echo Debian`"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""
GRUB_BACKGROUND="/home/autumn/Pictures/grub/suckng.jpg"

menu_color_normal=black/black
menu_color_highlight=yellow/dark-gray
color_normal=black/black
color_higlight=black/black

Solution

I had this problem in ubuntu 13.10 with grub-customizer. In my case it was caused by reverting to the default debian theme, which made the image appear in the background, but all text was grey. I solved it by editing the 05_debian_theme file found in /etc/grub.d/

$ sudo gedit /etc/grub.d/05_debian_theme

Find where it reads:

if [ -z "${2}" ] && [ -z "${3}" ]; then
        echo "  true"
fi

Change to:

if [ -z "${2}" ] && [ -z "${3}" ]; then
    echo "  true"
    echo "    set color_highlight=light-blue/black"
    echo "    set color_normal=white/black"
fi

Replace the colours with that of your choosing, remembering grub treats 'black' as transparent. Then run the following and reboot:

sudo update-grub

If that does not solve it for you go go back and edit the theme as mentioned above. You will see a section:

set_default_theme(){
case $GRUB_DISTRIBUTOR in
    Ubuntu|Kubuntu)
        # Set a monochromatic theme for Ubuntu.
        echo "${1}set menu_color_normal=white/black"
        echo "${1}set menu_color_highlight=light-blue/black"

        if [ -e /lib/plymouth/themes/default.grub ]; then
            sed "s/^/${1}/" /lib/plymouth/themes/default.grub
        fi
        ;;
    *)
        # Set the traditional Debian blue theme.
        echo "${1}set menu_color_normal=white/black"
        echo "${1}set menu_color_highlight=light-blue/black"
        ;;

Change the colours to what you require then update-grub, reboot.

Good luck, I hope this helps.