This is so cool. Artist Yayoi Kusama created an installation called The Obliteration Room for the Look Now, See Forever exhibit at the Queensland Art Gallery. It begins as a pristine white room, furnished entirely in white. Like so:
...and then the stickers come out. Over the course of two weeks, children who visited the exhibit were given colored dot stickers and invited to customize the space. The end result is staggering—it doesn't even look like the same room! See?
As I said, pretty freaking cool. Found via Colossal.