[Bug 1962314] Re: grub 2 custom.cfg colors not all used in Advanced options

[Mate Kukri]

I think this is something that should be reported and changed upstream:
https://savannah.gnu.org/bugs/?group=grub

** Changed in: grub2 (Ubuntu)
       Status: New => Won't Fix

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1962314

Title:
  grub 2 custom.cfg colors not all used in Advanced options

Status in grub2 package in Ubuntu:
  Won't Fix

Bug description:
  1) Ubuntu MATE 21.10
  2) grub 2.04-1ubuntu47
  3) I use text-mode for Grub, so made the following changes in /etc/default/grub:

  GRUB_TIMEOUT_STYLE=timeout
  GRUB_TERMINAL=console

  I then created a /boot/grub/custom.cfg with the following entries:

  color_normal="light-gray/blue"
  color_highlight="white/blue"
  menu_color_normal="light-gray/blue"
  menu_color_highlight="yellow/magenta"

  I expect these colors to be used on both the initial menu showing the
  OS version, Advanced options, and two Memory test options; and also on
  the Advanced options submenu showing the list of available kernels.

  4) What I'm seeing is that these colors are accurately reflected on
  the initial text menu.  However, if I select Advanced Options to show
  the list of kernels, then the first three color specs are shown
  properly.  But the last one, for the highlighted menu entry is not
  respected.  Instead, the color_highlight combination of white/blue is
  used instead.

  After some searching, I found a suggestion to manually update the
  /boot/grub/grub.cfg file to add the menu_color options to the Advanced
  options submenu, like so:

  submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-
  advanced-43548515-6ad7-4cdb-b295-f880ef847d12' {

      menu_color_normal="light-gray/blue"
      menu_color_highlight="yellow/magenta"

      menuentry 'Ubuntu, with Linux 5.13.0-30-generic' ...

  This does indeed produce the desired result, in that the highlighted
  menu item now has the desired colors.  But of course these changes
  will be lost the next time a new kernel is installed.

  Since the submenu inherits color_normal and color_hightlight from the
  top level menu, would be great if the menu_color_normal and
  menu_color_highlight were also inherited.  I don't believe the submenu
  can be modified via custom.cfg, since custom.cfg is simply sourced
  from grub.cfg at the very end, after all the menu and submenu entries
  have been created.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1962314/+subscriptions