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I would like to see everything on my computer screen in grayscale (like say the kindle screen). How do I do this?

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  • is this also available in ubuntu 14.04? I don't have the color filter option in Accessibility nor anywhere else :/ anyone?
    – user336384
    Oct 10, 2014 at 19:04

2 Answers 2

Reset to default
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Compiz has a few filters which supposedly can do what you want.

  1. Install Compiz Config Setting Manager from Ubuntu Software Center or with sudo apt install compizconfig-settings-manager.
  2. Run it and under Accessibility category you'll find Color Filter and Opacity, Brightness and Saturation filters.
  3. There you'll be able to enable them, assign a keyboard shortcut and edit the filters' settings.

Compiz Config Setting Manager

Now, I have to admit that I wasn't able to test it since I only have Ubuntu in a virtual box without 3D acceleration, but hopfully it'll give you some pointers.

Also, please don't get too excited modifying Compiz settings - it is quite easy to break Unity by doing so. The filters I mentioned above should be quite safe though.

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    I can confirm that the monochrome color filter works nicely.
    – Chris H
    Dec 5, 2013 at 13:35
  • I know this is an old answer, but what if when I install it and I only have but a few of the options? I only see "general" in the lefthand menu.
    – Kard Nails
    Mar 24, 2020 at 8:52
  • @KardNails You are more likely to get a reply by asking this as a new question.
    – Daniel Werner
    Mar 27, 2020 at 14:02
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As soon as I personally visited this answer at first in 2022, I would recommend to see this answer, where GNOME bedtime extension is a solution.
Works good for me as it has its own settings and not dangerous (seems like that) at all to crash your system.

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