If I don’t have a dog in the fight I’ll wear whatever.
I do have to say. If I’m being invited I will probably wear something that looks like I’m supporting my host. It’s kind of a courtesy thing. If a friend is going to do me the favor of bringing me along, the least I can do is not make them have to be the one who brought “that guy.” For example, I’ve worn blue/white to the big box at LES.