I got yellow pretty quickly and managed to find the blue category pretty fast. I eventually figured out the purple category but couldn't figure out what the last member was because the French name is very different and I'd never heard the English name before. I had to Google it to find it.

I hated purple. Not only is the category too broad, it's also just a very loose association.

I was in a very similar situation, except I actually guessed blue on the first try when I only had blue and purple left. I was losing my patience, and I considered the category briefly because of the one that's well known for it, but I'd never heard that about the others.

I also went with purple first because three of them jumped out at me. I'm still not sure about the specifics of the 4th, but I guessed just based on probability.

Yeah, I couldn't figure out what purple was before losing patience even though it was all I had left.