Should "achromatomaly" be included as a color filter in the a11y add-on?

[blakegearin]

One of the color filters currently provided in the a11y add-on is achromatomaly. A user by the name of Chromaphobe recently released their findings (video, transcript & footnotes) about the origin of this term and why it's not blue cone monochromacy, as some sources have suggested.

Additionally, I noticed the percentage provided by Storybook for achromatomaly (0,00001%) seems to have come from this PR comment which links to Reddit, a questionable source. None of the other sources listed appear to mention achromatomaly.

For reference, the earliest commit and PR I could find for achromatomaly came from @ndelangen in 2018. Presumably the SVG filters were brought in from a different source, though it's unclear where. Regardless, Storybook's filter does line up with Colorjack's, which has since been retracted.

Storybook's value: 0.618, 0.320, 0.062, 0, 0 0.163, 0.775, 0.062, 0, 0 0.163, 0.320, 0.516, 0, 0 0, 0, 0, 1, 0
Colorjack's value: R:[61.8, 32, 6.2], G:[16.3, 77.5, 6.2], B:[16.3, 32.0, 51.6]

With all this in mind, I'm of the opinion that "achromatomaly" should be removed from Storybook or at the least evaluated further for validity.

Related issues:

• Colorblindness Emulation broken in Firefox #5959
• Feature request: a11y - show population pourcentage in Accessibility Addon #15866

[ndelangen]

Hello @blakegearin I'm absolutely no expert on this, and have also not tracked what my source was for the values.

I'm ok with removing / updating the values, either is fine by me!
Would you be able to open a PR?

[blakegearin]

Hi! I'm no expert either, just been researching this domain recently. That's why I opened a discussion instead of going straight to PR. Since you mentioned it I went ahead and created one though: #18852

Perhaps others who have worked on this addon have some thoughts. Tagging for visibility:
@tooppaaa @maya @metasean @jsomsanith @Aarbel @MichaelArestad

[MichaelArestad]

Thanks for the tag. I am also okay with a PR. My preference would be to remove it for now.

[yannbf]

I'd love to hear your thoughts on this @mlama007