Fix: Improved Readability

Hi folks! 

I've updated the game's dialogue to improve readability, particularly the purple text that was previously too dark and hard to read for some. I made the purple a lot lighter now so it should be easier to read.

I thought it would be really complicated to make this change due to how Bitsy works but it turned out it was fairly easy and I was just intimidated by Javascript.

I've been meaning to do this for a long time but never got around to do it until now. Apologies for taking so long, and big thanks to the few people who pointed out the initial readability issues! Hopefully this will make this experience easier and kinder for everyone's eyes.

Let me know if there are any bugs in the text or whatever that I may have missed! 

✨

Cecile