Blue was almost immediate for me, followed closely by yellow. I think the bias in blue skews towards not just Americans but those of us who lived through the 80s.
Then I deliberated on the same five for green that Zagorath did. That made me look at the other three that I was sure must be purple, and two of them just clicked. Then the third, and then I rescued the fourth from the green pool.
I never would have solved this if I hadn't had it spoiled for me, to be honest.
spoiler
Yellow was pretty easy.
But I had 5 possibilities for green. The correct ones plus "tweet".
Blue I only found 3 members of. Without having been spoiled, I'd never have found hot dog. I've never heard it used that way in my life. A classic case of Connections' American bias, I suppose.
Purple is quite a clever one. I like it. But I'd never have gotten it myself.