Sorry about that. We did the classic dev thing where we used the latest build of our engine for the first time with this jam and ran into some issues with the web build. Still working on it as life allows though :D
On the topic of the color palette, we found it on https://lospec.com/palette-list. Which is a really awesome resource for trying to pull off a look like this. Fair warning, you can lose hours of your life just flipping through all the beautiful color palettes.