What would you miss the most in a colorless world?

The color in the world.

Explanation: Without color in the world, it would just be all dull, and look depressing. All the colors in the world bring emotions. If the world was colorless then how would we do all the things in the world we enjoy, like coloring. If we have no color then how would we be able to color or paint. Life would basically be boring if the world had no color.

The color of nature.