Like, what store do I have to go to? You know, like rainbows and crap.
I know where to get confetti, but how about the coolio stuff?
:shock: I'm confused.

Most of the fancy backgrounds are event items or contribution items, which means you can get most of them only from the exchange.

Here's a guide that will show you which items include backgrounds.

Here's the exchange guide that will show you the current going rate of these items. They include item previews as well.