Created attachment 168330 [details] misssing option as seen in image *** If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** SUMMARY there is no grey scale option in desktop effect, i am sensitive to color so i want to make the display black and white please add a accessibility feature grey scale in plasma 6 STEPS TO REPRODUCE 1. go to settings < window management < desktop effects 2. there is no grey scale option in accessibility OBSERVED RESULT option missing EXPECTED RESULT grey scale option present in option SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Kde Neon (available in About System) KDE Plasma Version: 6.0.3 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.3 ADDITIONAL INFORMATION it is essential option in accessibility please integrate it
might be important indeed for accessibility reasons, marking as wishlist but should be quite easy to do
In addition to accessibility, grayscale/monochrome filter is also often used by those trying to decrease their screentime and it's offered natively in at least Windows, iOS and Android with varying amount of going through menus depending on version. I think in Android it was originally a developer setting for testing accessibility for colour blind users.
A 3rd party kWin effect is available which implements this features. It would be great if Plasma devs officially adopt this feature into kWin. In principle this feature can also be integrated into Night Light -- like bedtime mode in modern smartphones. For details see https://discuss.kde.org/t/how-to-make-the-whole-screen-grayscale-in-kde-wayland/33179
Here are some reasons why this feature is important (see comment above for how to turn it on): 1. If someone needs to look at their phone at night, the grayscale mode puts significantly less strain on the eyes (having minor vision issues which are triggered by strain due to long usage of screen, I can say it does help a lot). It would be helpful to have the same on a KDE. 2. Moreover, looking at colorful imagery before going to sleep may partially contribute to insomnia (even with a blue light filter) – grayscale mode doesn’t have that much impact. 3. Also, research shows that grayscale mode helps dealing with phone addiction (https://www.nytimes.com/2018/01/12/technology/grayscale-phone.html). It should also apply to internet addiction on a computer. 4. The grayscale mode may have the added benefit of reducing battery use, but I am unsure about that. Many modern phones provide such a grayscale mode at night, in addition to a night light mode. MacOS and Windows already have this feature, so does the Cosmic Desktop (https://github.com/pop-os/cosmic-epoch/issues/1751#issuecomment-2762378024). In GNOME and Cinnamon, this feature can be implemented with certain extensions/applets. KDE already features Night Light. It would be great if KDE offers a Grayscale bedtime mode.
Good day, I would love to see this officially supported. Right now I have been maintaining the latest fork[1] of the old, now broken, grayscale effect for KDE. 1: https://github.com/lliurex/kwin-grayscale-effect/tree/plasma6
Hi! Just chiming in that I've submitted a merge request upstream, it's set for the 6.6 milestone. I implemented it as part of the accessibility colour blindness filters, but it could be moved to a separate KWin effect if it's more convenient (e.g., for scripting/time-based toggling). https://invent.kde.org/plasma/kwin/-/merge_requests/8106
Created attachment 184979 [details] proof of concept from https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3188#note_1304312
(In reply to Leah B. from comment #6) > Hi! > Just chiming in that I've submitted a merge request upstream, it's set for > the 6.6 milestone. > I implemented it as part of the accessibility colour blindness filters, but > it could be moved to a separate KWin effect if it's more convenient (e.g., > for scripting/time-based toggling). > > https://invent.kde.org/plasma/kwin/-/merge_requests/8106 Awsome Leah B. Thanks for working on this issue, I hope your changes get merged and help make kde more accessible to all of us. Thankyou kde community for making a awsome community 😀.
Git commit 89ac27b5d66d7c0b42957bd743af39ac2ba7bd75 by Xaver Hugl, on behalf of Leah B.. Committed on 23/09/2025 at 10:35. Pushed by zamundaaa into branch 'master'. kcms/access/ui: add monochrome mode Companion MR for plasma/kwin!8106 M +1 -0 kcms/access/ui/ColorblindnessCorrection.qml https://invent.kde.org/plasma/plasma-desktop/-/commit/89ac27b5d66d7c0b42957bd743af39ac2ba7bd75
Git commit 652a630d9bdfacba2fbddc6c0b310c0ead93b3fc by Xaver Hugl, on behalf of Leah B.. Committed on 23/09/2025 at 10:38. Pushed by zamundaaa into branch 'master'. plugins/colorblindnesscorrection: add monochrome mode This feature adds an adjustable monochromatic -- or greyscale -- mode to the colour blindness correction (built-in) effect. Similar features have long been present in operating systems like Mac OS, iOS, and Android. Refs: plasma-desktop!3188 Signed-off-by: Leah B. <kde@doasu.dev> M +28 -4 src/plugins/colorblindnesscorrection/colorblindnesscorrection.cpp M +8 -1 src/plugins/colorblindnesscorrection/colorblindnesscorrection.h M +2 -0 src/plugins/colorblindnesscorrection/colorblindnesscorrection.qrc A +17 -0 src/plugins/colorblindnesscorrection/shaders/monochrome.frag A +19 -0 src/plugins/colorblindnesscorrection/shaders/monochrome_core.frag https://invent.kde.org/plasma/kwin/-/commit/652a630d9bdfacba2fbddc6c0b310c0ead93b3fc