This feels like April's fools episode. Doing experiments with colors and how someone sees them is interesting, but doing it on a podcast is, ehm, interesting.

A cracking episode and very welcome during that weird period between Christmas and new year. I was fascinated by Danspaling to Greg his colour blindness. That's unfair, it would only be Dansplaing to Greg if it was about something like astophysics which no one would ever do.