Since I have ocs_daemonon="ssh" set, I was logged in via ssh... it makes testing easier. The strange colors are custom for my rxvt-unicode terminal via ~/.Xresources :-)

So the screenshot is of a clonezilla live environment (PXE booted from the network). Naturally, the same problem happens at a console... but, again, only if clonezilla is PXE booted from the network.

I think you should be able to reproduce the problem without much trouble.