[Wilfred]

Thanks for the feedback! I'll look to clarify the wording here. The failed example was a real output that difftastic gave in early versions.

I agree that the classic red/green colour scheme of diffs isn't great for colourblind users. I've asked a few colourblind developers and they were happy with terminal ANSI colours (which is what difftastic uses), because they can configure each colour individually.