Refined-github: Color blind diff improvement

[Munter]

The out of the box Github diff viewer is quite horrible to interact with as a red/green colorblind person.

Suggestions for improvements:

• Different colors. This might be hard because of different color blindness types, and also non-colorblind people have heavy associations with the red/green diff.
• Added contrast. Maybe there could be a subtle repeating background pattern the differs between the added and deleted categories. I'm told that color blind people have an improved contrast perception, so even a very subtle pattern might help here
• Different borders?

[maxcell]

@Munter This is such an excellent problem. A potential consideration is subscribing the CSS that determines additions and subtractions to a color palette set that could help people distinguish. Maybe where a user could select a different rendering of the same content. That would avoid all users having to be impacted but providing the same opportunity.

So things that would be addition/deletion could be reassigned.

[NamelessCoder]

One suggestion could be to add a high-contrast monochrome theme; for example an added line could be gray background with black text and a removed line the inverse.

[fregante]

I get the issue but any changes to such a base feature will likely receive a huge pushback unless done by GitHub themselves.

I suggest picking a color scheme that works for you and setting it in Stylus or Refined GitHub's option via CSS and sending the suggestion to GitHub.

There's also this https://userstyles.org/styles/149864/github-diff-colorblind-friendly

[bcawrse]

Any way the lines themselves could be altered? Theres only a handful of useful combinations I can think of; jagged like lightning, curvy, dashed, dotted, alternating thin-thick, jagged left side curvy right, etc. If color is the problem, can the problem be removed entirely?

[fregante]

I’m closing this for the reasons I stated earlier. This is already possible through CSS for who is interested