Questions tagged [color-management]

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Color management / profiles in a virtual machine under Linux

I have some photo editing software that I intend to run on a Windows VM, with the host being Ubuntu. I already read about color management for the Ubuntu OS itself and I think I managed to set up the ...
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Is there a way to do a custom color remapping of everything shown on the screen in linux?

So I've developed this strange issue recently, which is that I feel headache-y when I read red text (though not for text of other colors, or for larger red objects). I was wondering if there was a way ...
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Gpick's purpose is defeated by semi transparency of un-focused windows

I use picom to have non-focused windows be semi transparent in i3. The drawback is that this makes gpick totally ineffective, as in order to pick a color it needs to be in focus, so the other windows ...
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Dark Colours are just Black - Contrast is more compared to Windows

I recently switched to Arch from Windows, and I noticed that dark colours seem darker. Often it's just pitch black. Since the same image looks different on Windows and Linux, the colours' RGB values ...
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How do I adjust the display color whitout any hardware (e.g. spectrometer)?

I recently replaced my laptop screen, and when it was first installed, its color was too greenish. I go into Windows 10 and use dccw.exe(a windows built-in color calibration tool) adjust the gamma and ...
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How do I use the local terminal color scheme when I ssh into a remote server?

I have a local terminal which has a color scheme set up the way I want it. When I ssh into a remote server through this terminal, it adopts the color scheme of the remote terminal within my terminal. ...
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1 answer
216 views

zsh comments nearly invisible on command-line

When typing comments into the command-line in zsh, the commented text appears nearly invisible. I use the st terminal (Luke Smith's fork), which pulls on my .Xresources for setting colors and it seems ...
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10 votes
1 answer
1k views

Are there any color filters for color vision deficiencies? (Deuteranomaly, Protanomaly)

I have red-green-weakness (a bit of both, deuteranomaly and protanomaly) and on Windows there was a very helpful feature to convert the for me difficult-to-distinguish colors to nearby ones on the ...
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How to manually adjust gamma, and rgb balance in Wayland

I see gnome settings allows me to load ICC color profiles per screen and has a button to calibrate (from what I've read, using a calibration tool). In Windows, I was able to manually mess with the ...
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2 votes
1 answer
3k views

"Error during CMS conversion: Could not open scanner ICM profile"

I'm using xsane to scan images with my Brother MFC-L2710DW multifunction. Scanning works fine, but - I repeatedly get an error message saying: Error during CMS conversion: Ccould not open scanner ...
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Display colours look dry and less vibrant with default applications.

My display looks very drab and less vibrant when images are viewed with the default applications (Image Viewer, in this case). And even in Chrome (which is also my default browser), the colours look ...
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How to create a KDE Plasma color scheme for titlebar colors only?

I wish to use KDE Plasma's ability to set titlebar colors using window-specific rules. I know how to accomplish that in general. However, since I am setting only titlebar color options, I would like ...
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1 answer
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How can I change the text color in gnome top bar?

I want to change the text color of notification from green to black for example. I'm using Xenlism Minimalism, that is the great shell for me, but the only issue is that the text color is light green ...
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Changing GRUB_COLOR_NORMAL has no effect

I decommented and edited the two lines in /etc/default/grub which are relative to the colors, as follows GRUB_COLOR_NORMAL="green/black" GRUB_COLOR_HIGHLIGHT="light-green/green" then I've run sudo ...
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18 votes
2 answers
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Check if terminal supports 24-bit / true color

In a shell script, how can I test programmatically whether or not the terminal supports 24-bit or true color? Related: This question is about printing a 24-bit / truecolor test pattern for eyeball ...
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4 votes
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Do colour schemas interfere with settings from iterm2, oh-my-zsh and vim?

There are so many color schemes for terminal environment, themes for shell and color coding schema for vim. I wonder what's the relation between them and do they interfere with each other? For ...
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24 votes
2 answers
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How to manage the white balance in webcam

On Linux my webcam works fine, but when using artificial lighting the white-balance is too reddish. Color look fine with natural illumination. Is there a way to calibrate the colors or have some form ...
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2 votes
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Add a ICC profile for a printer

I have a Canon printer, using the Linux's stock printer drivers. I noticed that I can select a media type in the printer's properties, under Printer Options. This will apparently choose a ICC color ...
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5 votes
1 answer
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How to change saturation on Intel GPU

I'm familiar with redshift How can I simply adjust monitor color temperture in X? I'd like to change color saturation to somehow "fix" poor quality of HD display which has definitely lower color ...
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2 votes
2 answers
5k views

What are GNU/Linux tools for checking PDF documents before publishing?

I have to send PDF documents to a professional printing company. The company feeds back with comments about how some text should be overprinted, some logo has been incorporated in RGB instead of CMYK,...
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1 vote
0 answers
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Configure XDEC X server for running application in true color on remote X client

I have a DEC Unix v4.0, I want to run application remotely from my Unix, but when i do that, get this error: X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of ...
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3 votes
2 answers
2k views

How can I run Linux in 256 color

I want to run a Linux distribution in 256 color. Doesn't matter which distribution can do it. I tested Ubuntu 14.04, but it can't run lower than 16 bit. (using /etc/X11/xorg.conf) Which ...
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4 votes
1 answer
3k views

Get current screen brightness level

The brightness keys on my laptop work ok, and gnome shell displays a level bar when changing it. But the level bar doesn't display any values (absolute nor relative). How can I retrieve the current ...
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2 votes
0 answers
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Render everything in two colours

Is it possible to recolour everything on the screen, every application, web pages, menus, everything, in two colours (with intermediate shades, i.e. monochromatic)? Some document viewers support this....
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3 votes
1 answer
2k views

Customize Git Bash Color

I used to have a black / orange / green git bash color style. Now I needed to download it again and it's a mess (for me). All pink, lime green and yellow. It hurts my eyes. Is there a way to ...
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3 votes
3 answers
1k views

Colorize filenames based on status for git diff --name-status

I often use git diff --name-status BRANCH_NAME to get the list of modified files. Is it possible to colorize the output of that command similar to the output of git status - green for added files, ...
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2 answers
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In Linux I have different color for the same thing than in Windows

The colors in Windows are much less saturated. Why is that? The fonts are much more crisper. I have installed msfonts in Ubuntu and it's better, but still the Windows fonts are different. Check the ...
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3 answers
2k views

Apply Colors to Terminal Output to highlight URL & Others

I am looking for a way to apply colors to highlight URLs (http://....) and IP @ in the output of a terminal command. Example would be with a wget command for example where I would like to be able to ...
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2 votes
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Color profile change seems to have no effect

I'm using a machine with both, Windows (10) and Linux Mint + Unity installed. Colors on Linux look quite strange and poorly calibrated, but everything looks fine on Windows. I was assuming that my ...
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1 vote
0 answers
2k views

Changing the background color of the window title in GTK3

I would like the title of the active window to be white on blue (to clarify: somewhat like Microsoft Windows XP). Here is my ~/.config/gtk-3.0/gtk.css: .titlebar .title { color: #000066; } .header-...
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2 votes
1 answer
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Location of colorscheme-files in Kate

In Kate one can export file Fortran.katehlcolor which store the information about color in syntax-highlighting. The syntax-highlighting files itself are located in ~/.kde/share/apps/katepart/syntax ...
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4 votes
2 answers
360 views

Customizing less colors

When using less in OS X, how can I customize the colors with with things are displayed? When I run less within an ansi-term in Emacs the colors don't come out nicely. $ less --version less 418 ...
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2 votes
1 answer
2k views

convert display to monochrome

My Asus netbook has Debian Wheezy. I came across a weird idea. How would it look if my display screen is monochrome. Is it possible to configure X11 to make the display monochrome?
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6 votes
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Invert *only brightness* for monitor

When using notebook in darkness it is more convenient to have the screen mostly black, compared to the default mostly white. The issue of inverting colors was discussed here frequently. One have a ...
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24 votes
7 answers
46k views

How to convert a color pdf to black-white?

I'd like to transform a pdf with some coloured text and images in another pdf with only black&white, in order to reduce its dimensions. Moreover, I would like to keep the text as text, without ...
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12 votes
2 answers
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Can I color-calibrate a Dell U2413 wide-gamut monitor under Linux?

If I get a Dell U2413 wide-gamut monitor to use with Fedora for photography, will I be able to use it properly? I've got a ColorHug, and I see that there's a U2410 ccmx profile; will that get me in a ...
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289 votes
12 answers
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Better colors so comments aren't dark blue in Vim?

Mostly I edit Ruby files, although shell script file comments are also # Currently my comments show as dark blue on black which is really hard to read. See screenshot. How can I change their color? ...
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4 votes
1 answer
6k views

gnome-terminal overrides Vim color setting

I'm in gnome-terminal on Linux Mint 13. (Mate) Whatever color scheme I set for the terminal overrides the color scheme i have set for Vim. How can i stop that from happening? I have read this: http:...
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1 vote
0 answers
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Changing color depth in linux mint

How can I alter color depth settings in Linux Mint 13 maya? I tried to find the xorg.conf in /etc/X11/ But I could not find the file.
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  • 358
1 vote
1 answer
611 views

How to set default printer settings without driver

I am not at all an expert Linux user, but I do network and applications support for an office technology company. One of our clients is a pharmacy which prints prescription labels through software ...
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4 votes
1 answer
2k views

How can I generate CMYK images via the command line under Linux?

I have an application I have developed which is generating RGB PNG images with text on them via imageMagic, like so: convert -size 1000x1000 -density 300 xc:white -pointsize 24 \ -fill "rgb(0,0,0)" ...
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