Internet now trying to guess colour of an Adidas trackie

Taylor Swift's not on the case as yet, but surely it's only a matter of time. Celebs and us norms alike were all questioning (if only momentarily) the colour of that dress, which - as it turns out - was blue and black (I think).

Now, it's happened again, thanks to this post on Tumblr. It's clearly white and blue... Isn't it? Discuss.