A new test called "Is my blue your blue?" reveals how different -- or similar -- your color perceptions are compared to everyone else. First there was “the dress,” then there was the sneakers, now ...

It's leaving participants (including the test developer and his spouse) divided. Color perception is different for all of us.

First there was “the dress,” then there was the sneakers, now there’s a debate over the color blue. If you’ve ever argued ...