How to change display to black and white on demand?

Dotan Cohen dotancohen at
Sun Dec 25 20:54:13 UTC 2011

Is there any way to change the display to black and white on the fly?
I use Kubuntu 11.10 with xorg 1.10.4 and KDE 4.7. I tried finding a
monitor setting for enabling black and white, however I could not find

Note that this question originally appears on SuperUser, but as there
was no reply there I crosspost to the *buntu experts!

Thanks! Merry Christmas and happy Chanukah to all!

Dotan Cohen

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