What shorts go better with this top?

I would say, the top with the blue shorts because it gives off brightness that would really compliment the top. The shorts would look great with the blue in the top. Unless you want more of a matching look, which doesn't necessarily work in all cases. I don't think the purple in the top would work with the purple shorts. That is just my opinion though. You'd look like a dress up doll. Blue looks much more appealing on different skin tones and people.