In Color Sense game you need to tap the tile with the different color.

Score 29 and above: You have Eagle eyes!
Score 21-29: You have Normal eyes.
Score 14-21: You have Weak eyes.
Score 14 and below: Please Check Your eyes and reflexes !

There’s an addicting new Internet game to get yourself wrapped up in. It’s more of a color test for your eyes called Color Sense. In case you’ve never heard of it, here’s how you play: First, you start out with four cubes, and click on the one where the shade looks slightly off. Each time you pick the correct cube, a new set of cubes is shown and you must once again pick the cube that stands out to you as different, all with just 60 seconds on the clock.

Color Sense game is the most popular Color Sense puzzle game in iOS. What you need is to identify the tile that is different from the rest. Tap on the odd tile and gather points. It is an eye test game to test the ability to differentiate different colours.