Nutshell:
Kolor is a simple, time-wasting challenge that asks you to choose which color is being displayed from a selection at the bottom of your screen. As the levels progress, the colors you choose from get closer together, thereby making it harder.
More:
The creator says it’s designed to wake you up in the mornings with a quick alertness puzzle, but if you’re colorblind (like me), then this could end up being far more of a challenge than was ever intended.
My score was just 318, for the record.