A filter for blue light, Night Colors, could also arrive soon on KDE Plasma.

The developers have been working on color correction kwin (the KDE window manager / compositor) with Wayland .

Although the function Night Color is not yet implemented it is possible that it is ready for release Plasma 5.11 , expected next September.

The function that will be implemented in Plasma definitely will not be called ‘Night Light’, as on GNOME, but ‘Night Color’ and the operation is entirely analogous.


The computers, in all their forms (workstations, laptops, tablets and smartphones), are now part of everyday life for all of us. Numerous studies submitted on the radio waves emitted from smartphones, tablets and the like, others focus on the negative impact that the massive use of devices with display on our sleep . Excessive light projected in the late evening can cause, with a very high frequency, insomnia or difficulty falling asleep .

Night Light, recently introduced the new function in GNOME , which will in fact be replicated with Night Color in Plasma, at least in terms of functionality, substantially it consists of a software designed just to reduce the disturbances caused by excessive exposure to bright screens, purely with clear light. It is precisely this latter causing the problem: sleep is reconciled in our body from the production of melatonin , a substance produced by several organs during the nighttime which is depleted until awakening, when replaced by the sunlight.

Our body makes precisely this cycle known as circadian rhythm and exposure to display before going to bed tends to reduce the production of melatonin, a substance that makes experiencing sleep. There is no need to exaggerate: spend some time surfing the net on your PC or to play on the evening tablet is certainly not synonymous with white rose in the night but it is now recognized that exposure to bright lights – and also includes those pollution bright present in large cities – due to a reduction of sleep.

Night Light, redshift, Night Color, f.lux solve the problem by varying the temperature of the colors reproduced by the display present on our monitors. No, it is not heat variations, but of chromatic alterations. For what purpose? Simple: our body, in front of computers with not too bright and clear display (as the light of the sun in fact), continues to produce the substance indispensable to sleep normally . Do not put stress on the view to be able to rest well is crucial.

You can see a demo of KDE Night Color at work in this video YouTube :

KDE Plasma 5.11 Could Get Night Color
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