I really appreciate that you noticed the details and I'm glad to hear that my jokes are landing with at least some players!
Bitsy really is a wonderful tool (much like Twine). It allows people with no programming knowledge and no art skill to make a game, yet it's also powerful enough for people to hack away and do increasingly complicated things with art and code. (I'm getting there. This is my second Bitsy game - I made my first one (Heist At The Museum) last month for another jam but I had more time to work on that one (about a week(?) at a more leisurely pace).) I really recommend deep diving into peoples' games (and just playing around with the tool) because the ones I mentioned really are only a few of so many good games. Plus, the more you play, the more you see the clever things people have figured out to do that aren't the default and it really sparks one's imagination.
An example is the palette changes as you row to shore. It took way longer for me to do that than I was expecting (lesson learnt!) as I really struggled to find the right colour combinations for so many steps (also, it killed my brain adding so many of what the tool calls "exits" and "entrances"). I would usually also check the palettes and do my best to adjust for high contrast and/or colour blindness combos (it's not always possible to make adjustments but I try - especially with colour blindness) and I just didn't have time to do so, which is a personal disappointment.
Anyway, play a bunch of Bitsy games!