@GAFBlizzard - Negative? Not at all! That's a great critique :) It's the classic color wheel (3 main colors and their opposites). There are a lot of variants to it of course, but the 3 main colors and 3 opposite colors is what is mostly used. There are of course massively more complex color wheels and most of them weirdly offset too...
The jelly bits I intended to clean up after going down a level, but ran out of time for the compo. I would have loved to improve feedback in general (sounds, introduction messages, feedback messages (damage, crits), some more effects etc)...
One of the last moment changes I did was adjust the jelly health based on level and that was a horrible call. It definitely were better with what I originally had and colors were more important from the beginning... now, as you say, you can just blow through the first levels without even knowing the color wheel is important.
Also it probably would have been a good idea to add color wheel image to the game, might have helped a bit :)
Thanks for the feedback!