The dress is so 2015, now the color debate is being waged over a pair of flip flops, shirt and shorts.

This week, Rachael Stewart from the United Kingdom, posted a picture of Nike shorts, shirt and sandals to Facebook, saying she doesn't understand how anyone can see anything but pink and white, Good Housekeeping reported.

But while she apparently sees shades of pink, many responses to the post say they see teal and gray. Could it be a trick of the eye or a trick of Photoshop?

Some even say pink and mint, green and brown or orange and yellow are the colors that are showing up for them.