The Democrats are associated with the color blue, it is the Republicans that are associated with the color red. But as other has pointed out Team Red in this context has no political implication.
I agree though that the marketing is indeed weird.
You and I could decide right now to switch them around. Or even assign totally different colors. It might have a slight impact though on our ability to be understood by the the rest of the world.
PS. I haven’t verified this but I’ve heard that the current colors were assigned in the year 2000.
I agree though that the marketing is indeed weird.