When searching online, I find that Budgie does not seem to have this feature. This would be a dealbreaker for me, that’s why I am trying to find out: does Budgie have the possibility to invert colours of the screen or the active window, or can this be activated without too much trouble?
What I am looking for is an easy way to switch the rendering of pdf’s, websites, text documents etc. which have dark writing on a bright background to bright writing on a dark background.
Hi @maqni ,
The first point is not so difficult. yay -S xcalib
Then create a Custom Shortcut ( press super type short go down , go down)
the command: xcalib -invert -alter
and then press Sup+Ctrl+I
Edit: xrandr-invert-colors
is similar for all or dedicated displays
I have just now tried out the xcalib command on my Plasma Desktop. I installed yay -S xcalib and typed the command xcalib -invert -alter in the terminal. The screen colours got inverted, but unfortunately some writing had a blurry frame/aura around it. I can’t explain it better. And I can’t take a screenshot of it because after un-inverting, both the writing and the screenshot look normal again.
To try to formulate it with emojis: this should look like this when inverted (and it does when using the keyboard shortcuts in Plasma), but with the command xcalib -invert -alter it looks more or less like this , making text almost unreadable.
So I am now trying xrandr: git clone "https://github.com/zoltanp/xrandr-invert-colors.git". One question, because I have not installed a package with git clone before: can I uninstall it again afterwards?
For me on a laptop there is no blurry frame. yay -S xrandr-invert-colors
exists as well. I do not see diffresences.
As far I imagine yay is safer to install from AUR than loading from github.
I’m not sure about it. yay -Rns xcalib
should remove it and dependencies as well.
If yay does not see the manually installed package then the manual removal is the only way.
There is a redshifter package which is good to
set color temperature and brightness.
redshifter 3700 0.8
as an example. As for xcalib there are further
parameters and ICC profile (?) I haven’ used.
In Plasma the display can be trimmed smoothly Gamma Colors etc
Plasma is so complicated for me. Once I found where to enable Meta+Ctrl+I
and now I’m lost. — Found.
Thanks again for the information!
Sorry, for some reason I did not see that there is a package xrandr-invert-colors in the AUR.
I installed it and tried it out. Unfortunately, most text is displayed with weird frames around it again on my Plasma Desktop.
I have tried out one thing and found some interesting behaviour: when inverting colours with Ctrl+Meta+u, all text is inverted properly, and when then additionally inverting colours with xrandr-invert-colors (inverted and re-inverted, i.e. original colour), some text, but not all text, gets garbled to some extent.
On the other hand, when inverting the screen colour with xrandr-invert-colors (text becomes garbled), and then inverting the inversion with the Plasma keyboard shortcut Ctrl+Meta+u, strangely the garbling is gone and the text is displayed properly.
@eso: So xrandr-invert-colors works properly if you try it out on Budgie desktop?
If anyone else out there reading this is trying this out on Budgie, does it work well? If so, I’d guess it is some odd KDE Plasma behaviour, and hope that it would work well when I install Budgie.
Redshifter seems to be for brightness and colour temperature only? In my use case, I wish to invert colours during bright daylight, too.
For me, too That’s why I am so interested in trying out Budgie.
So switched to xrandr-invert-colors in Budgie
set redshifter 8000 0.8 (at random) and took two pictures but unless I take a picture by phone I cannot present the inverted one.
With redshifter and xrandr-invert-colors you may find a combination that suits you.
Alacritty and Firefox simple accepts CTRL/+ to zoom in and CTRL/- to zoom out.
I can’t say anything for certain. Check it out.
Edit3: To avoid over-engineering: yay -S brightnessctl
two command assigned to ALT+F12 brightnessctl s 5%+
and ALT+F11 brightnessctl s 5%-
Colourtemp if I’m not mistaken can be set by display (Night) Light settings manually.
And finally gnome-tweaks (I haven’t not experienced the risks of it) gives more possibilities
of theming. + xrandr-invert-colors is also needed.
For ATT: @maqni
As for better readability I came across
firefox Dark Reader extension
Evince document reader with night mode
(I’m not a ‘vacuum cleaner agent’ but ) Hyprland on EOS with nwg-look seems to solve most of such problems. Here is one of the install procedures from a fresh no DE starting point not a big challenge.
should look like this 
when inverted (and it does when using the keyboard shortcuts in Plasma), but with the command 
, making text almost unreadable.
That’s why I am so interested in trying out Budgie.
