Even after I saw them I would have never guessed the green. I've just never interacted with that topic in my life. Got yellow and purple fairly easily. For the blue I guessed the category right but only knew three, only two of which I was full sure, and had to guess the fourth.
I'm struggling today. Got the green out easy. Narrowed the yellow down to 6 but struggled really hard to cut out 2 of those (but did eventually make a guess and get it right).
But I don't have any leads on the blue or purple yes, even though I've been staring at it on and off for hours.
Solved it pretty sure, but I don't understand the color blocks for the solutions and how colors mean anything. Sidebar on community doesn't help, care to explain? Just stumbled across your post.