Thank you so much! Happy to hear you appreciate the design.
I did figure out what might cause some confusing deaths - copied from another reply, the difference is calculated wrongly: 'red' has a hue value of 0, whilst 'very-very-very close to red but a biiiit more purple' has a hue value of 1, so the game would think the difference in hue would be very big, whilst in-game the colors are similar! (In turn, making colors like green more 'sensitive')