Thanks for the feedback! More people struggled with the menu than I expected, it definitely could use something to indicate dragging cards (which I wanted to use in the menu to show how things are controlled in game).
The colors are slightly relevant but I didn't want them to give the full picture. Every word is internally a 4D vector, but the color of the cards uses only two of those dimensions. It's meant to hint at what could work, but not be the best strategy.