Talking of videos, seeing my one from last night has reminded me of something that came up during the ride that I didn't work out until after it was over.
During the early stages of the ride when I was really having to put out a big effort to stay with the pack, I was surprised to see that the graph at the bottom of the screen was showing up mainly in yellow with occasional flecks of green, whereas I'd have expected to see orange and yellow mixed as I was pushing quite hard. Similarly on the climb at the end the graph was mainly green and blue, which to me suggests a tempo effort, which may be why I was so surprised that I set a PR at the end.
Then it dawned on me - as Zwift has put my FTP up by about 20 points just in the last two months, it has at the same time adjusted my Power Zones to match. So all of my reference points regarding colours are now off - what used to be orange is now yellow for the same amount of wattage, yellow is green, etc. Going to take some getting used to!