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I'd like to be able to selectively turn off R/G/B channels on my Linux Mint 21 based (X11) PC (to simulate color blindness). As of now I understand ICC color profiles a bit, so I understand ICC tries to correct colors to produce proper original - hence it is not possible to have a profile that drops one of the colors.

Please give some hints (including source code edit if no other available) to achieve my goal. TIA

P.S. web search for "to simulate color blindness linux" found e.g. https://colororacle.org/, it changes one frozen displayed window, it is useful, still I'd like to have an X11 solution.

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  • I've definitely seen special ICC profiles which turn off a channel. But I'm not sure if that's actually how human vision works. Commented Oct 7 at 19:06
  • @grawity, I've found a web page which claims to have color deficiencies ICC profiles (color.org/resources/cvd.xalter), I've downloaded them and tried via mpv --icc-profile=~/Documents/CVDlut-protan.icc but got "[vo/gpu] lcms2: Couldn't link the profiles", whereas mpv --icc-profile=/usr/share/color/icc/colord/SwappedRedAndGreen.icc works with some test profile I happened to have on my system. Commented Oct 8 at 6:30

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