> red for bad, green for good
8% of men of Northern European descent (and 0.4% of women) are red-green colorblind. That'd be a terrible choice. Use blue-orange, blue-red, or purple-green.
You are ignoring that most people already have a cultural understanding of the colors red and green. Changes done for accessibility should never making things worse for the average user.
Red/green is semantic in these cases. They’re user configurable in almost all terminals, so there’s no real accessibility issue. I tend to associate blue with decorative accent, yellow with info/warning text, and cyan and magenta for really fancy stuff.
More importantly, dont use color as sole source of information. Strikethrough, emoji or ok / bad can also be used.
This approach is worse. Use red and green like everyone else and the user can choose their terminal color palette to differentiate in a way that works for them. Then it works the same across all commands. If you're the odd one out, you're adding more mental overhead for the user, not less.