While arguing over color of the dress died down two years ago, a new debate emerged. This time, the featured clothing article in question was a pair of Vans sneakers. Some people saw grey and teal and others saw pink and white.

The question was posed by Twitter user Julia Charlottte Wednesday. “What colour is this?” she asked her followers. The photo garnered more than 8,000 likes and was shared more than 3,000 times. 

While it looks grey and teal to some people, the real color of the shoe is pink and white. 

So why do some people see different things?

During 2015’s “dressgate” debate, a blogger on NeoGAF explained that whether a person saw black and blue or white and gold had to do with a person’s eyes.

If a person saw blue and black: “Your retina’s cones are more high functioning, and this results in your eyes doing subtractive mixing.”

If a person saw white and gold: “Our eyes don’t work well in dim light so our retinas rods see white, and this makes them less light sensitive, causing additive mixing, (that of green and red), to make gold.”

If people saw both: “Our eyes are very average, and it could change because of YOUR rooms lighting or the tilt of your phone. This is the same manipulation they use for optical illusions.”

Charlottte seemed to bask in her 15 minutes of fame, changing her Twitter biography to be about her post. “Uh yeah I’m that person who started the shoe debate. I’m also trying to have a positive influence on the world aye,” it reads.

Follow me on Twitter @mariamzzarella