The most recent test update, 0.8.2c (the one released May 12 2025) has a bug. You can not apply any of the settings under 'Game' without causing the entire tutorial world to go bright yellow and neon blue. I tested in other worlds and none of them had the same issue. I did also want to mention that the 'equipment' section of the inventory isn't explained. Other then those two trivial issues, thanks for the wonderful game! (and for my new addiction)

This happens due to a problem with either the color filter or color hue settings. I think it's something like the game has your old settings saved but the new version of the game has the default settings put in the options so when you change it to something new it messes with all the colors. but try messsing with the two color settings i mentioned.