GuixSD artwork

[Andreas Enge]

Hello,

finally I tried out GuixSD on a spare machine, and I must say, I am impressed!

I have two questions concerning the artwork; I did a "guix pull" before
reconfiguring, so these should concern the current state:
- The logo on the grub screen has a checkerboard pattern in the background;
  I think we discussed about it months ago, and I was under the impression
  that this had been replaced.
- The xfce background image is a mouse or so on blue; did we not have a
  special GuixSD background?

Thanks,

Andreas