Bug#1013079: installation-reports: GUI install option isn't visible on boot

[Chris Hofstaedtler]

Control: reassign -1 debian-cd

Hi,

* Holger Wansing <hwansing at mailbox.org>:
> > > ----- On Jun 17, 2022, at 7:43 AM, Philip Hands phil at hands.com wrote:
> > > > 
> > > >  https://openqa.debian.net/tests/60553#step/_boot_to_debianinstaller/2
> > > > 
> > > > if you look closely in the highlighted box, you can just about see
> > > > "Graphical install" as a black font on dark_blue background, but it's
> > > > very close to invisible.
> > > > 
> > > > It should have an inverted background on the selected item, which then
> > > > makes the black text easily visible, as seen in the last working test,
> > > > using a netinst ISO from 2022-06-07 17:27:
> > > > 
> > > >  https://openqa.debian.net/tests/59056#step/_boot_to_debianinstaller/1

I'm reassigning this to debian-cd, because:
- grub2 upstream has deleted support for grayscale PNGs. I don't
  think this is coming back.
- the menu on the installer ISOs uses a grayscale image to highlight
  the currently selected menu entry. As demonstrated in the bug
  report, this is now broken.

While technically grub2 broke this, I'd think the way forward is for
debian-cd to convert the highlight PNGs to non-grayscale.

FTR:
debian-cd/data/bookworm/hl_c.png: PNG image data, 20 x 20, 8-bit grayscale, non-interlaced

Hope this helps in resolving the issue,
Chris