REPL seems fine to me, using the dark theme too. interesting that you're colorblind 😮

I’m only fairly slightly colourblind, so I have trouble distinguishing dark purple from dark blue, for example, or dark red from dark brown. But Darcula is pretty dark, so that may be the issue.

My uncle can only tell a red trafficlight from a green one by the position 😮

i wonder if the red light looks green or the green light looks red. or if he sees a color that none of us understand 🙂

Probably the last one, I think.