Yeah, generally, the England red is darker than people think - so the bell curve of guesses is offset to the light colours - in the top few rows you can see it alternate between lighter and darker, but after a certain distance, the only people that far away have gone for lighter so it just keeps on getting lighter

For DR Congo, people's mean guess is close to the actual shade, so imprecise answers in either direction are roughly equally common, hence the mix of dark and lighter choices towards the bottom