you wait all year for a Bhutan, then two come along together

Green is an appalling category, it's like ,all are words'

@ Maartjebabes: I'd actually agree that green isn't an ideal category in this instance, but it's more because I think the category with lots of red herrings has to reasonably obviously stick out as that category (so people can work out whether to use time bruteforcing it or not).

Here, I think people have to figure out the meta-theme of the quiz first and then work backwards from the most distinctive features. In that sense, 'green' isn't ideal, because it's not as obvious as if your words were 'tree', 'lime', 'frog' etc.